CVE-2026-92791

EUVD-2026-81054
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.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
uberkraken
𝑥
≤ 0.1.29
CNA
Common Weakness Enumeration
References
https://github.com/uber/kraken
https://github.com/uber/kraken/blob/v0.1.27/build-index/tagserver/server.go#L128-L129
https://github.com/uber/kraken/blob/v0.1.27/lib/backend/namepath/pather.go#L78-L84
https://github.com/uber/kraken/blob/v0.1.27/lib/backend/testfs/server.go#L165-L173
https://github.com/uber/kraken/issues/645
https://www.vulncheck.com/advisories/uber-kraken-through-0.1.29-path-traversal-via-tag-parameter