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CVE-2026-55873

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets

4.3 MediumFix available

SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin account and fails open, allowing an authenticated low-privileged S3 user to enumerate administrator-owned table bucket names and ARNs. This issue is fixed in version 4.34.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.34%Up 0.1 points since Jul 9, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.3

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets

SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin account and fails open, allowing an authenticated low-privileged S3 user to enumerate administrator-owned table bucket names and ARNs. This issue is fixed in version 4.34.

Record
CVE-2026-55873
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-863
Updated
2026-11-02
EUVDEUVD-2026-42286 4.3

SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin account and fails open, allowing an authenticated low-privileged S3 user to enumerate administrator-owned table bucket names and ARNs. This issue is fixed in version 4.34.

Record
EUVD-2026-42286
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-hgpf-8634-g44c 4.3

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets

Summary

SeaweedFS routes requests signed with SigV4 service s3tables to the S3Tables management API. Authorization on that path collapsed account-less S3 identities into the shared admin account and failed open, so a user holding only ordinary S3 Read credentials — and no S3Tables-specific permission — could invoke S3Tables management operations such as GET /buckets and enumerate administrator-owned table bucket inventory (names and ARNs). The same handler backs the Iceberg REST catalog, which was affected by the same flaw.

Impact

An authenticated low-privileged S3 user can cross the boundary between ordinary S3 object access and S3Tables management. Confirmed impact is disclosure of administrator-owned table bucket inventory (bucket names and ARNs); in shared or multi-tenant deployments this can reveal tenant naming and operational structure.

Affected versions

SeaweedFS >= 4.08, < 4.34 (the S3Tables management API was introduced in 4.08).

Patched versions

Fixed in 4.34 (#9961). Administrator status is now decided by the ACTION_ADMIN capability rather than by a collapsed admin account id, S3Tables authorization no longer defaults to allow, and the tautological ListTableBuckets gate was removed. Related hardening of the same root cause landed in #9962, #9963, and #9971.

Workaround

No configuration workaround — upgrade to 4.34 or later.

Credit

Reported by TA-MU-TA.

Record
GHSA-hgpf-8634-g44c
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-863
Updated
2026-11-02
NVD 4.3

SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin account and fails open, allowing an authenticated low-privileged S3 user to enumerate administrator-owned table bucket names and ARNs. This issue is fixed in version 4.34.

Record
CVE-2026-55873
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-863
Updated
2026-11-02
OSV 4.3

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets

SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin account and fails open, allowing an authenticated low-privileged S3 user to enumerate administrator-owned table bucket names and ARNs. This issue is fixed in version 4.34.

Record
CVE-2026-55873
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-863
Updated
2026-11-02
OSVGHSA-hgpf-8634-g44c 4.3

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets

Summary

SeaweedFS routes requests signed with SigV4 service s3tables to the S3Tables management API. Authorization on that path collapsed account-less S3 identities into the shared admin account and failed open, so a user holding only ordinary S3 Read credentials — and no S3Tables-specific permission — could invoke S3Tables management operations such as GET /buckets and enumerate administrator-owned table bucket inventory (names and ARNs). The same handler backs the Iceberg REST catalog, which was affected by the same flaw.

Impact

An authenticated low-privileged S3 user can cross the boundary between ordinary S3 object access and S3Tables management. Confirmed impact is disclosure of administrator-owned table bucket inventory (bucket names and ARNs); in shared or multi-tenant deployments this can reveal tenant naming and operational structure.

Affected versions

SeaweedFS >= 4.08, < 4.34 (the S3Tables management API was introduced in 4.08).

Patched versions

Fixed in 4.34 (#9961). Administrator status is now decided by the ACTION_ADMIN capability rather than by a collapsed admin account id, S3Tables authorization no longer defaults to allow, and the tautological ListTableBuckets gate was removed. Related hardening of the same root cause landed in #9962, #9963, and #9971.

Workaround

No configuration workaround — upgrade to 4.34 or later.

Credit

Reported by TA-MU-TA.

Record
GHSA-hgpf-8634-g44c
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-863
Updated
2026-11-02
Show 5 moreShow less
OSVBIT-seaweedfs-2026-55873 No score

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets

SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin account and fails open, allowing an authenticated low-privileged S3 user to enumerate administrator-owned table bucket names and ARNs. This issue is fixed in version 4.34.

Record
BIT-seaweedfs-2026-55873
Updated
2026-11-02
OSVGO-2026-6329 No score

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets in github.com/seaweedfs/seaweedfs

SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets in github.com/seaweedfs/seaweedfs

Record
GO-2026-6329
Updated
2026-11-02
OSVopenSUSE-SU-2026:21812-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260902T191204 2026-09-02T19:12:04Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-6305 CVE-2026-55834 GHSA-2wvm-8mvp-22qv
  • GO-2026-6306 CVE-2026-55064 GHSA-44v6-7fxq-vgf4
  • GO-2026-6307 CVE-2026-55067 GHSA-569v-q83c-3j3g
  • GO-2026-6308 CVE-2026-55066 GHSA-5pg6-m483-7vrg
  • GO-2026-6309 CVE-2026-54746 GHSA-8x7x-83cf-c3pg
  • GO-2026-6310 CVE-2026-54755 GHSA-cgc5-v3f2-8m2v
  • GO-2026-6311 CVE-2026-54766 GHSA-f27p-pw2p-9pr4
  • GO-2026-6312 CVE-2026-55108 GHSA-fmgp-q6jx-gg3x
  • GO-2026-6313 CVE-2026-55065 GHSA-gg93-x632-9ccv
  • GO-2026-6314 CVE-2026-55569 GHSA-mf5c-hw34-4hpp
  • GO-2026-6315 CVE-2026-54754 GHSA-p7gw-2pcp-5pf8
  • GO-2026-6316 CVE-2026-55068 GHSA-x8mj-6p3q-g5pp
  • GO-2026-6317 CVE-2026-55588 GHSA-298f-872v-2rcx
  • GO-2026-6318 CVE-2026-55621 GHSA-64f3-v33m-w89f
  • GO-2026-6319 CVE-2026-55622 GHSA-c9f5-j9c3-mhrg
  • GO-2026-6320 CVE-2026-55245 GHSA-w98g-5w9p-p3rc
  • GO-2026-6321 CVE-2026-55484 GHSA-hr6j-w4mw-g9mj
  • GO-2026-6322 CVE-2026-55678 GHSA-p378-jp5r-gpgw
  • GO-2026-6323 CVE-2026-55763 GHSA-v358-wf77-39xv
  • GO-2026-6324 CVE-2026-55761 GHSA-x626-fcwx-f5pc
  • GO-2026-6325 CVE-2026-27878 GHSA-6xff-cpcq-vpw2
  • GO-2026-6326 CVE-2026-55784 GHSA-334q-h5g3-fpxv
  • GO-2026-6327 CVE-2026-55874 GHSA-56wq-x3wv-3ff4
  • GO-2026-6328 CVE-2026-55785 GHSA-fp46-6vfw-gc9c
  • GO-2026-6329 CVE-2026-55873 GHSA-hgpf-8634-g44c
  • GO-2026-6330 CVE-2026-55764 GHSA-mrpp-v6pg-p54x
  • GO-2026-6333 CVE-2026-25712 GHSA-37w2-86g3-h4qh
  • GO-2026-6334 CVE-2026-24690 GHSA-47rq-xp99-92mx
  • GO-2026-6335 CVE-2026-27657 GHSA-4c8f-3m6h-m56r
  • GO-2026-6336 CVE-2026-26232 GHSA-5v69-g2m3-3hq3
  • GO-2026-6337 CVE-2026-28705 GHSA-7jvx-g65v-r899
  • GO-2026-6338 CVE-2026-22547 GHSA-922f-hfwp-p56f
  • GO-2026-6339 CVE-2026-20909 GHSA-fhq3-p242-2qpf
  • GO-2026-6340 CVE-2026-25718 GHSA-h697-89cp-24q8
  • GO-2026-6341 CVE-2026-26307 GHSA-h9c5-x7g8-4q7f
  • GO-2026-6342 CVE-2026-26247 GHSA-m5ch-ppfx-xv3v
  • GO-2026-6354 CVE-2026-78662
  • GO-2026-6355 CVE-2026-56855
  • Update to version 0.0.20260828T144745 2026-08-28T14:47:45Z.
  • GO-2026-6303 CVE-2026-56854
Record
openSUSE-SU-2026:21812-1
Updated
2026-11-02
OSVSUSE-SU-2026:23692-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260902T191204 2026-09-02T19:12:04Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-6305 CVE-2026-55834 GHSA-2wvm-8mvp-22qv
  • GO-2026-6306 CVE-2026-55064 GHSA-44v6-7fxq-vgf4
  • GO-2026-6307 CVE-2026-55067 GHSA-569v-q83c-3j3g
  • GO-2026-6308 CVE-2026-55066 GHSA-5pg6-m483-7vrg
  • GO-2026-6309 CVE-2026-54746 GHSA-8x7x-83cf-c3pg
  • GO-2026-6310 CVE-2026-54755 GHSA-cgc5-v3f2-8m2v
  • GO-2026-6311 CVE-2026-54766 GHSA-f27p-pw2p-9pr4
  • GO-2026-6312 CVE-2026-55108 GHSA-fmgp-q6jx-gg3x
  • GO-2026-6313 CVE-2026-55065 GHSA-gg93-x632-9ccv
  • GO-2026-6314 CVE-2026-55569 GHSA-mf5c-hw34-4hpp
  • GO-2026-6315 CVE-2026-54754 GHSA-p7gw-2pcp-5pf8
  • GO-2026-6316 CVE-2026-55068 GHSA-x8mj-6p3q-g5pp
  • GO-2026-6317 CVE-2026-55588 GHSA-298f-872v-2rcx
  • GO-2026-6318 CVE-2026-55621 GHSA-64f3-v33m-w89f
  • GO-2026-6319 CVE-2026-55622 GHSA-c9f5-j9c3-mhrg
  • GO-2026-6320 CVE-2026-55245 GHSA-w98g-5w9p-p3rc
  • GO-2026-6321 CVE-2026-55484 GHSA-hr6j-w4mw-g9mj
  • GO-2026-6322 CVE-2026-55678 GHSA-p378-jp5r-gpgw
  • GO-2026-6323 CVE-2026-55763 GHSA-v358-wf77-39xv
  • GO-2026-6324 CVE-2026-55761 GHSA-x626-fcwx-f5pc
  • GO-2026-6325 CVE-2026-27878 GHSA-6xff-cpcq-vpw2
  • GO-2026-6326 CVE-2026-55784 GHSA-334q-h5g3-fpxv
  • GO-2026-6327 CVE-2026-55874 GHSA-56wq-x3wv-3ff4
  • GO-2026-6328 CVE-2026-55785 GHSA-fp46-6vfw-gc9c
  • GO-2026-6329 CVE-2026-55873 GHSA-hgpf-8634-g44c
  • GO-2026-6330 CVE-2026-55764 GHSA-mrpp-v6pg-p54x
  • GO-2026-6333 CVE-2026-25712 GHSA-37w2-86g3-h4qh
  • GO-2026-6334 CVE-2026-24690 GHSA-47rq-xp99-92mx
  • GO-2026-6335 CVE-2026-27657 GHSA-4c8f-3m6h-m56r
  • GO-2026-6336 CVE-2026-26232 GHSA-5v69-g2m3-3hq3
  • GO-2026-6337 CVE-2026-28705 GHSA-7jvx-g65v-r899
  • GO-2026-6338 CVE-2026-22547 GHSA-922f-hfwp-p56f
  • GO-2026-6339 CVE-2026-20909 GHSA-fhq3-p242-2qpf
  • GO-2026-6340 CVE-2026-25718 GHSA-h697-89cp-24q8
  • GO-2026-6341 CVE-2026-26307 GHSA-h9c5-x7g8-4q7f
  • GO-2026-6342 CVE-2026-26247 GHSA-m5ch-ppfx-xv3v
  • GO-2026-6354 CVE-2026-78662
  • GO-2026-6355 CVE-2026-56855
  • Update to version 0.0.20260828T144745 2026-08-28T14:47:45Z.
  • GO-2026-6303 CVE-2026-56854
Record
SUSE-SU-2026:23692-1
Updated
2026-11-02
OSVSUSE-SU-2026:23712-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260902T191204 2026-09-02T19:12:04Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-6305 CVE-2026-55834 GHSA-2wvm-8mvp-22qv
  • GO-2026-6306 CVE-2026-55064 GHSA-44v6-7fxq-vgf4
  • GO-2026-6307 CVE-2026-55067 GHSA-569v-q83c-3j3g
  • GO-2026-6308 CVE-2026-55066 GHSA-5pg6-m483-7vrg
  • GO-2026-6309 CVE-2026-54746 GHSA-8x7x-83cf-c3pg
  • GO-2026-6310 CVE-2026-54755 GHSA-cgc5-v3f2-8m2v
  • GO-2026-6311 CVE-2026-54766 GHSA-f27p-pw2p-9pr4
  • GO-2026-6312 CVE-2026-55108 GHSA-fmgp-q6jx-gg3x
  • GO-2026-6313 CVE-2026-55065 GHSA-gg93-x632-9ccv
  • GO-2026-6314 CVE-2026-55569 GHSA-mf5c-hw34-4hpp
  • GO-2026-6315 CVE-2026-54754 GHSA-p7gw-2pcp-5pf8
  • GO-2026-6316 CVE-2026-55068 GHSA-x8mj-6p3q-g5pp
  • GO-2026-6317 CVE-2026-55588 GHSA-298f-872v-2rcx
  • GO-2026-6318 CVE-2026-55621 GHSA-64f3-v33m-w89f
  • GO-2026-6319 CVE-2026-55622 GHSA-c9f5-j9c3-mhrg
  • GO-2026-6320 CVE-2026-55245 GHSA-w98g-5w9p-p3rc
  • GO-2026-6321 CVE-2026-55484 GHSA-hr6j-w4mw-g9mj
  • GO-2026-6322 CVE-2026-55678 GHSA-p378-jp5r-gpgw
  • GO-2026-6323 CVE-2026-55763 GHSA-v358-wf77-39xv
  • GO-2026-6324 CVE-2026-55761 GHSA-x626-fcwx-f5pc
  • GO-2026-6325 CVE-2026-27878 GHSA-6xff-cpcq-vpw2
  • GO-2026-6326 CVE-2026-55784 GHSA-334q-h5g3-fpxv
  • GO-2026-6327 CVE-2026-55874 GHSA-56wq-x3wv-3ff4
  • GO-2026-6328 CVE-2026-55785 GHSA-fp46-6vfw-gc9c
  • GO-2026-6329 CVE-2026-55873 GHSA-hgpf-8634-g44c
  • GO-2026-6330 CVE-2026-55764 GHSA-mrpp-v6pg-p54x
  • GO-2026-6333 CVE-2026-25712 GHSA-37w2-86g3-h4qh
  • GO-2026-6334 CVE-2026-24690 GHSA-47rq-xp99-92mx
  • GO-2026-6335 CVE-2026-27657 GHSA-4c8f-3m6h-m56r
  • GO-2026-6336 CVE-2026-26232 GHSA-5v69-g2m3-3hq3
  • GO-2026-6337 CVE-2026-28705 GHSA-7jvx-g65v-r899
  • GO-2026-6338 CVE-2026-22547 GHSA-922f-hfwp-p56f
  • GO-2026-6339 CVE-2026-20909 GHSA-fhq3-p242-2qpf
  • GO-2026-6340 CVE-2026-25718 GHSA-h697-89cp-24q8
  • GO-2026-6341 CVE-2026-26307 GHSA-h9c5-x7g8-4q7f
  • GO-2026-6342 CVE-2026-26247 GHSA-m5ch-ppfx-xv3v
  • GO-2026-6354 CVE-2026-78662
  • GO-2026-6355 CVE-2026-56855
  • Update to version 0.0.20260828T144745 2026-08-28T14:47:45Z.
  • GO-2026-6303 CVE-2026-56854
Record
SUSE-SU-2026:23712-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/seaweedfs/seaweedfs
Go
 0.0.0-20260128085517-09bb90e8dc16 up to 0.0.0-20260614205536-b13463880c1f
0.0.0-20260614205536-b13463880c1f
seaweedfs
Bitnami
 before 4.34.0
4.34.0
govulncheck-vulndb
SUSE:Linux Enterprise Server 16.0
From an advisory covering 39 CVEs
 before 0.0.20260902T191204-160000.1.1
0.0.20260902T191204-160000.1.1
govulncheck-vulndb
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 39 CVEs
 before 0.0.20260902T191204-160000.1.1
0.0.20260902T191204-160000.1.1
govulncheck-vulndb
openSUSE:Leap 16.0
From an advisory covering 39 CVEs
 before 0.0.20260902T191204-160000.1.1
0.0.20260902T191204-160000.1.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-55873 is a medium vulnerability (CVSS 4.3) in Seaweedfs, published July 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 27th percentile. Fixed in github.com/seaweedfs/seaweedfs 0.0.0-20260614205536-b13463880c1f.

References

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