CVE-2026-55874
High
Description
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.
SeverityHigh
CVSS7.7
Exploit probability—
ProductGithub.com/seaweedfs/seaweedfs
PublishedJul 8, 2026
First seenJul 8, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- github.com/seaweedfs/seaweedfs0.0.0-20260612000715-b44cf51fe931 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/seaweedfs/seaweedfsGo | v < 0.0.0-20260612000715-b44cf51fe931 | 0.0.0-20260612000715-b44cf51fe931 |
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