CVE-2026-92791
Uber Kraken through 0.1.29 Path Traversal via tag parameter
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
Uber Kraken through 0.1.29 fails to validate the tag parameter in the /tags/{tag} endpoint, allowing unauthenticated attackers to traverse outside the configured storage root. Attackers can use percent-encoded parent-directory segments in the tag parameter to read arbitrary files accessible to the testfs backend process.
| CWE | CWE-22 |
| Vendor | uber |
| Product | kraken |
| Published | Sep 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
uber / kraken
0 ≤ 0.1.29
References
github.com: https://github.com/uber/kraken/issues/645 github.com: https://github.com/uber/kraken github.com: https://github.com/uber/kraken/blob/v0.1.27/lib/backend/namepath/pather.go#L78-L84 github.com: https://github.com/uber/kraken/blob/v0.1.27/lib/backend/testfs/server.go#L165-L173 github.com: https://github.com/uber/kraken/blob/v0.1.27/build-index/tagserver/server.go#L128-L129 vulncheck.com: https://www.vulncheck.com/advisories/uber-kraken-through-0.1.29-path-traversal-via-tag-parameter
Credits
George Chen