CVE-2026-92791
highUber Kraken through 0.1.29 fails to validate the tag parameter in the /tags/{tag} endpoint, allowing unauthenticated attackers to traverse outside the configur…
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.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-16 21:17
Modified: 2026-09-24 21:08
NVD status: Deferred
Last synced 2 days ago
Verified against the source API 2026-10-27 06:54 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/uber/kraken disclosure@vulncheck.com
- https://github.com/uber/kraken/blob/v0.1.27/build-index/tagserver/server.go#L128-L129 disclosure@vulncheck.com
- https://github.com/uber/kraken/blob/v0.1.27/lib/backend/namepath/pather.go#L78-L84 disclosure@vulncheck.com
- https://github.com/uber/kraken/blob/v0.1.27/lib/backend/testfs/server.go#L165-L173 disclosure@vulncheck.com
- https://github.com/uber/kraken/issues/645 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/uber-kraken-through-0.1.29-path-traversal-via-tag-par... disclosure@vulncheck.com
- https://github.com/uber/kraken/issues/645 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:54 UTC · record ↗