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CVE Vulnerability Details :
CVE-2026-55874
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-08 Jul, 2026 | 14:43
Updated At-08 Jul, 2026 | 17:01
Rejected At-
▼CVE Numbering Authority (CNA)
SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read

SeaweedFS is a distributed storage system. Prior to 4.34, the S3 API gateway does not reject dot-dot path segments in the X-Amz-Copy-Source header used by CopyObject and UploadPartCopy, allowing an authenticated identity scoped to one bucket to read objects from other buckets through server-side copy. This issue is fixed in version 4.34.

Affected Products
Vendor
seaweedfs
Product
seaweedfs
Versions
Affected
  • < 4.34
Problem Types
TypeCWE IDDescription
CWECWE-22CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Type: CWE
CWE ID: CWE-22
Description: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Metrics
VersionBase scoreBase severityVector
3.17.7HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Version: 3.1
Base score: 7.7
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4
x_refsource_CONFIRM
https://github.com/seaweedfs/seaweedfs/pull/9929
x_refsource_MISC
https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd
x_refsource_MISC
https://github.com/seaweedfs/seaweedfs/releases/tag/4.34
x_refsource_MISC
Hyperlink: https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/seaweedfs/seaweedfs/pull/9929
Resource:
x_refsource_MISC
Hyperlink: https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd
Resource:
x_refsource_MISC
Hyperlink: https://github.com/seaweedfs/seaweedfs/releases/tag/4.34
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found