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Vulnerability Details :

CVE-2026-55874

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-08 Jul, 2026 | 14:43
Updated At-08 Jul, 2026 | 17:01
Rejected At-
Credits

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
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
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:08 Jul, 2026 | 15:16
Updated At:08 Jul, 2026 | 18:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.7HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
N/A
Type: Secondary
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
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-22Secondarysecurity-advisories@github.com
CWE ID: CWE-22
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccdsecurity-advisories@github.com
N/A
https://github.com/seaweedfs/seaweedfs/pull/9929security-advisories@github.com
N/A
https://github.com/seaweedfs/seaweedfs/releases/tag/4.34security-advisories@github.com
N/A
https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4security-advisories@github.com
N/A
Hyperlink: https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/seaweedfs/seaweedfs/pull/9929
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/seaweedfs/seaweedfs/releases/tag/4.34
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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