CVE-2026-55874
High · 7.7CVSS
7.7
EPSS
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Published
Jul 8, 2026
CISA due date
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The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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