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  • IAM Admin API Authorization Boundaries

    In Design

    DesignIAMsecurityCompatibility

    IAM Admin API Authorization Boundaries

    Decision, 2026-10-16: GO; source acceptance and merge complete. Server PR #242 merged the signed repair commit 2616d43fb into main as 4e55fc7db. The final candidate was verified directly on main’s 00a375c4e baseline, independently of the pending LIST …

    Decision, 2026-10-16: GO; source acceptance and merge complete. Server PR #242 merged the signed repair commit 2616d43fb into main as 4e55fc7db. The final candidate was verified directly on main’s 00a375c4e baseline, independently of the pending LIST …

  • SILO 20261015 Release Notes

    In Release

    ReleasesecuritySilo

    SILO 20261015 Release Notes

    Tag: RELEASE.2026-10-15T00-00-00Z · Package version: 20261015000000.0.0. Use the download page for binaries, Linux packages and Docker instructions. This is the first Server release containing the complete SN-2026-015 and SN-2026-016 Object Lock …

    Tag: RELEASE.2026-10-15T00-00-00Z · Package version: 20261015000000.0.0. Use the download page for binaries, Linux packages and Docker instructions. This is the first Server release containing the complete SN-2026-015 and SN-2026-016 Object Lock …

  • Object Lock Retention Bypass and Version-Overwrite Repair Design (SN-2026-015 / SN-2026-016)

    In Design

    SilosecurityObject LockWORMS3IAM

    Object Lock Retention Bypass and Version-Overwrite Repair Design (SN-2026-015 / SN-2026-016)

    Status on 2026-10-15: The complete repair in PR #234 (14042b5aa) and PR #235 (0d3ba5d4c) first shipped in RELEASE.2026-10-15T00-00-00Z. The previously published RELEASE.2026-09-16T00-00-00Z remains affected. See the advisory and release notes for …

    Status on 2026-10-15: The complete repair in PR #234 (14042b5aa) and PR #235 (0d3ba5d4c) first shipped in RELEASE.2026-10-15T00-00-00Z. The previously published RELEASE.2026-09-16T00-00-00Z remains affected. See the advisory and release notes for …

  • SN-2026-015: PutObjectRetention Authorization Bypass

    In Security

    securityObject LockIAMSilo

    SN-2026-015: PutObjectRetention Authorization Bypass

    First fixed release: RELEASE.2026-10-15T00-00-00Z (2026-10-15). It contains the complete repairs for SN-2026-015 and SN-2026-016, merged through PR #234 and PR #235. Server RELEASE.2026-09-16T00-00-00Z and the earlier tested …

    First fixed release: RELEASE.2026-10-15T00-00-00Z (2026-10-15). It contains the complete repairs for SN-2026-015 and SN-2026-016, merged through PR #234 and PR #235. Server RELEASE.2026-09-16T00-00-00Z and the earlier tested …

  • September Security Repairs: Payload Integrity, IAM Revocation and Console Sharing

    In Security

    securitySigV4IAMConsole

    September Security Repairs: Payload Integrity, IAM Revocation and Console Sharing

    Publication update, 2026-09-17: The September source repairs discussed here shipped in Server 20260916. Coordinated upgrades, opt-in prerequisites and remaining limitations still apply. Dated source-status and validation records below retain their …

    Publication update, 2026-09-17: The September source repairs discussed here shipped in Server 20260916. Coordinated upgrades, opt-in prerequisites and remaining limitations still apply. Dated source-status and validation records below retain their …

  • SN-2026-011: Fix and Release Status

    In Security

    securitySilo

    SN-2026-011: Fix and Release Status

    Publication update, 2026-09-17: The September source repairs discussed here shipped in Server 20260916. Coordinated upgrades, opt-in prerequisites and remaining limitations still apply. Dated source-status and validation records below retain their …

    Publication update, 2026-09-17: The September source repairs discussed here shipped in Server 20260916. Coordinated upgrades, opt-in prerequisites and remaining limitations still apply. Dated source-status and validation records below retain their …

  • An Unsigned Header Is Not Part of the Request

    In Design

    DesignsecuritySigV4CopyObjectPresignedCompatibility

    An Unsigned Header Is Not Part of the Request

    Publication update, 2026-09-17: The September source repairs discussed here shipped in Server 20260916. Coordinated upgrades, opt-in prerequisites and remaining limitations still apply. Dated source-status and validation records below retain their …

    Publication update, 2026-09-17: The September source repairs discussed here shipped in Server 20260916. Coordinated upgrades, opt-in prerequisites and remaining limitations still apply. Dated source-status and validation records below retain their …

  • SILO Server 20260903 Pre-release Review

    In Design

    DesignReviewsecurityCompatibilityRelease

    SILO Server 20260903 Pre-release Review

    Warning 旧版分片列举设计已被覆盖 · Earlier multipart-listing designs superseded (2026-10-17) English: The #79 multipart-listing proposals, enablement advice and status in this article are historical. Subsequent design work is governed by the latest design …

    Warning 旧版分片列举设计已被覆盖 · Earlier multipart-listing designs superseded (2026-10-17) English: The #79 multipart-listing proposals, enablement advice and status in this article are historical. Subsequent design work is governed by the latest design …

  • SILO 20260903 Security Notes: SN-2026-006 through 010

    In Security

    securityS3SSE-CReplicationIAM

    SILO 20260903 Security Notes: SN-2026-006 through 010

    Released in SILO 20260903. These fixes are part of RELEASE.2026-09-03T13-18-01Z. See the complete release notes for the 20260806-to-20260903 upgrade boundary, components, verification evidence, and known deferrals. This bulletin collects five …

    Released in SILO 20260903. These fixes are part of RELEASE.2026-09-03T13-18-01Z. See the complete release notes for the 20260806-to-20260903 upgrade boundary, components, verification evidence, and known deferrals. This bulletin collects five …

  • Explicit Version Deletes Now Require DeleteObjectVersion

    In Release

    ReleasesecurityIAMS3Compatibility

    Explicit Version Deletes Now Require DeleteObjectVersion

    Release status: this change is implemented in pgsty/silo#104, tracking issue #58. Publishing this note does not by itself mean that a server release, package, image, or deployment contains the change. SILO now maps object-delete authorization to the …

    Release status: this change is implemented in pgsty/silo#104, tracking issue #58. Publishing this note does not by itself mean that a server release, package, image, or deployment contains the change. SILO now maps object-delete authorization to the …

  • No I/O Before Auth, No Privilege From Headers

    In Design

    DesignsecurityCORSReplicationSSE-CCompatibility

    No I/O Before Auth, No Privilege From Headers

    Release check (2026-09-16): the original repair described here is included in Server 20260903. Dated review and test accounts below record their original evidence, not a still-pending release or acceptance of a particular production installation. …

    Release check (2026-09-16): the original repair described here is included in Server 20260903. Dated review and test accounts below record their original evidence, not a still-pending release or acceptance of a particular production installation. …

  • One Endpoint, Two Privileges: Separating User and Group Status

    In Design

    DesignIAMsecurityCompatibility

    One Endpoint, Two Privileges: Separating User and Group Status

    Release check (2026-09-16): the original repair described here is included in Server 20260903. Dated review and test accounts below record their original evidence, not a still-pending release or acceptance of a particular production installation. …

    Release check (2026-09-16): the original repair described here is included in Server 20260903. Dated review and test accounts below record their original evidence, not a still-pending release or acceptance of a particular production installation. …

  • silo-pkg 3.12.0 Released

    In Release

    Releasepkgsecurity

    silo-pkg 3.12.0 Released

    Release date: 2026-08-24 · Version: v3.12.0 · Commit: 2b087a1 · Repository: pgsty/silo-pkg Version 3.12.0 is a main-line minor release with two themes: a policy-write guard for ARN prefixes that name no resource, and the maintained Go 1.27 / etcd 3.7 …

    Release date: 2026-08-24 · Version: v3.12.0 · Commit: 2b087a1 · Repository: pgsty/silo-pkg Version 3.12.0 is a main-line minor release with two themes: a policy-write guard for ARN prefixes that name no resource, and the maintained Go 1.27 / etcd 3.7 …

  • Preview Text, Never Execute It: SILO Console Text Preview PRD

    In Design

    DesignConsolepreviewsecurity

    Preview Text, Never Execute It: SILO Console Text Preview PRD

    Status: shipped in SILO Console 2.2.0 · Owner: pgsty/silo-console · Tracking: pgsty/silo#17 · Review: consensus of product, security, and frontend architecture reviews SILO Console can preview images, PDFs, audio, and video, but not the small logs, …

    Status: shipped in SILO Console 2.2.0 · Owner: pgsty/silo-console · Tracking: pgsty/silo#17 · Review: consensus of product, security, and frontend architecture reviews SILO Console can preview images, PDFs, audio, and video, but not the small logs, …

  • Three Headers, One Lie: Making the Client Source Address Mean Something

    In Security

    securitySource Address

    Three Headers, One Lie: Making the Client Source Address Mean Something

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Classification: …

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Classification: …

  • Absent Is Not Empty: A Blank versionid and the Fail-Open It Invites

    In Security

    securityVersion ID

    Absent Is Not Empty: A Blank versionid and the Fail-Open It Invites

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Classification: …

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Classification: …

  • Object Grant, Bucket Reach: When 'bucket/*' Could Rewrite the Bucket Itself

    In Security

    securityObject Grant

    Object Grant, Bucket Reach: When 'bucket/*' Could Rewrite the Bucket Itself

    Status: Fixed on pgsty/silo-pkg main (3c24ad1, extended by 1f97549, scoped to its final twelve actions in d8b1fa7), released as silo-pkg v3.11.0; consumed by pgsty/minio Classification: Access-control hardening — a privilege boundary, narrowly …

    Status: Fixed on pgsty/silo-pkg main (3c24ad1, extended by 1f97549, scoped to its final twelve actions in d8b1fa7), released as silo-pkg v3.11.0; consumed by pgsty/minio Classification: Access-control hardening — a privilege boundary, narrowly …

  • The Parser Knew, the Schema Didn't: Config Keys That Could Take Every Notification Down

    In Security

    securityBucket Notifications

    The Parser Knew, the Schema Didn't: Config Keys That Could Take Every Notification Down

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Classification: …

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Classification: …

  • Sorted Is Not Increasing: How One Duplicate Part Number Doubled an Object

    In Security

    securityMultipart Upload

    Sorted Is Not Increasing: How One Duplicate Part Number Doubled an Object

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Classification: Data …

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Classification: Data …

  • Internode Path Containment Audit: Paying Off What CVE-2026-42600 Left Owing

    In Security

    securityPath Containment

    Internode Path Containment Audit: Paying Off What CVE-2026-42600 Left Owing

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Affected scope: …

    Release status (verified 2026-09-13): the primary fix in this article is included in 20260804 and later releases. The investigation below retains its original test boundaries; see the component matrix for current unreleased work. Affected scope: …

  • CVE-2026-42600: ReadMultiple Storage-REST Path Traversal

    In Security

    securityReadMultiple

    CVE-2026-42600: ReadMultiple Storage-REST Path Traversal

    Status: Released First containing release: RELEASE.2026-06-18T00-00-00Z GitHub advisory: GHSA-xh8f-g2qw-gcm7 Affected scope: Distributed erasure only; cluster-root / internode JWT required The msgpack body of /rmpl carried Bucket, Prefix, and Files. …

    Status: Released First containing release: RELEASE.2026-06-18T00-00-00Z GitHub advisory: GHSA-xh8f-g2qw-gcm7 Affected scope: Distributed erasure only; cluster-root / internode JWT required The msgpack body of /rmpl carried Bucket, Prefix, and Files. …

  • CVE-2026-41145: Unsigned-Trailer Query Authentication Bypass

    In Security

    securityUnsigned Trailer

    CVE-2026-41145: Unsigned-Trailer Query Authentication Bypass

    Status: Released First containing release: RELEASE.2026-04-17T00-00-00Z GitHub advisory: GHSA-hv4r-mvr4-25vw Query-string SigV4 credentials could enter a STREAMING-UNSIGNED-PAYLOAD-TRAILER data flow, while the old code verified the signature only …

    Status: Released First containing release: RELEASE.2026-04-17T00-00-00Z GitHub advisory: GHSA-hv4r-mvr4-25vw Query-string SigV4 credentials could enter a STREAMING-UNSIGNED-PAYLOAD-TRAILER data flow, while the old code verified the signature only …

  • CVE-2026-40344: Snowball Auto-Extract Authentication Bypass

    In Security

    securitySnowball

    CVE-2026-40344: Snowball Auto-Extract Authentication Bypass

    Status: Released First containing release: RELEASE.2026-04-17T00-00-00Z GitHub advisory: GHSA-9c4q-hq6p-c237 Snowball’s PutObjectExtractHandler omitted the streaming unsigned-trailer authentication case. A tar stream with a forged signature could …

    Status: Released First containing release: RELEASE.2026-04-17T00-00-00Z GitHub advisory: GHSA-9c4q-hq6p-c237 Snowball’s PutObjectExtractHandler omitted the streaming unsigned-trailer authentication case. A tar stream with a forged signature could …

  • CVE-2026-39414: Oversized S3 Select Records and a SIMD Bypass

    In Security

    securityS3 Select

    CVE-2026-39414: Oversized S3 Select Records and a SIMD Bypass

    Status: Released; the second-round fix was completed in June Initial fix release: RELEASE.2026-04-17T00-00-00Z Complete fix release: RELEASE.2026-06-18T00-00-00Z GitHub issue: pgsty/minio#25 The first fix in April reused the existing 1 MiB …

    Status: Released; the second-round fix was completed in June Initial fix release: RELEASE.2026-04-17T00-00-00Z Complete fix release: RELEASE.2026-06-18T00-00-00Z GitHub issue: pgsty/minio#25 The first fix in April reused the existing 1 MiB …

  • CVE-2026-34204: Replication Metadata Injection

    In Security

    securityReplication

    CVE-2026-34204: Replication Metadata Injection

    Status: Released First containing release: RELEASE.2026-04-17T00-00-00Z GitHub issue: pgsty/minio#24 Ordinary PUT and COPY requests could smuggle X-Minio-Replication-* headers into internal X-Minio-Internal-* SSE metadata, creating objects whose …

    Status: Released First containing release: RELEASE.2026-04-17T00-00-00Z GitHub issue: pgsty/minio#24 Ordinary PUT and COPY requests could smuggle X-Minio-Replication-* headers into internal X-Minio-Internal-* SSE metadata, creating objects whose …

  • CVE-2026-33419: LDAP STS Enumeration and the Throttling Chain

    In Security

    securityLDAP STS

    CVE-2026-33419: LDAP STS Enumeration and the Throttling Chain

    Status: Released, followed by two rounds of corrections First containing release: RELEASE.2026-04-17T00-00-00Z Complete correction: RELEASE.2026-06-18T00-00-00Z GitHub issue: pgsty/minio#23 The core vulnerability was straightforward: LDAP STS …

    Status: Released, followed by two rounds of corrections First containing release: RELEASE.2026-04-17T00-00-00Z Complete correction: RELEASE.2026-06-18T00-00-00Z GitHub issue: pgsty/minio#23 The core vulnerability was straightforward: LDAP STS …

  • CVE-2026-33322: OIDC JWT Algorithm Confusion

    In Security

    securityOIDC

    CVE-2026-33322: OIDC JWT Algorithm Confusion

    Status: Released First containing release: RELEASE.2026-04-17T00-00-00Z Affected entry points: AssumeRoleWithWebIdentity, AssumeRoleWithClientGrants GitHub issue: pgsty/minio#22 The old implementation placed the OIDC client secret in the JWT verifier …

    Status: Released First containing release: RELEASE.2026-04-17T00-00-00Z Affected entry points: AssumeRoleWithWebIdentity, AssumeRoleWithClientGrants GitHub issue: pgsty/minio#22 The old implementation placed the OIDC client secret in the JWT verifier …

  • CVE-2026-32285: The jsonparser Advisory That Required No Patch

    In Security

    securityjsonparser

    CVE-2026-32285: The jsonparser Advisory That Required No Patch

    Status: Closed without a code change GitHub issue: pgsty/minio#26 Security maintenance is not always a sequence of “find a vulnerability, then ship a patch.” The initial assessment of CVE-2026-32285 was that the repository might still carry a …

    Status: Closed without a code change GitHub issue: pgsty/minio#26 Security maintenance is not always a sequence of “find a vulnerability, then ship a patch.” The initial assessment of CVE-2026-32285 was that the repository might still carry a …

  • CVE-2025-62506: Session-Policy Privilege Escalation

    In Security

    securityIAM

    CVE-2025-62506: Session-Policy Privilege Escalation

    Status: Inherited and released First Silo community release: RELEASE.2025-12-03T12-00-00Z Upstream fixed release: RELEASE.2025-10-15T17-29-55Z GitHub advisory: GHSA-jjjj-jwhf-8rgr Upstream fix: minio/minio#21642 A service account or STS account with …

    Status: Inherited and released First Silo community release: RELEASE.2025-12-03T12-00-00Z Upstream fixed release: RELEASE.2025-10-15T17-29-55Z GitHub advisory: GHSA-jjjj-jwhf-8rgr Upstream fix: minio/minio#21642 A service account or STS account with …