{"id":"CVE-2026-92791","title":"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","summary":"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 i…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-22"],"vendor":"uber","product":"kraken","affected":["kraken <= 0.1.29"],"published":"2026-09-16","updated":"2026-09-21","sourceUpdated":"2026-09-21T16:17:27.380","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92791","references":[{"url":"https://github.com/uber/kraken","label":"disclosure@vulncheck.com"},{"url":"https://github.com/uber/kraken/blob/v0.1.27/build-index/tagserver/server.go#L128-L129","label":"disclosure@vulncheck.com"},{"url":"https://github.com/uber/kraken/blob/v0.1.27/lib/backend/namepath/pather.go#L78-L84","label":"disclosure@vulncheck.com"},{"url":"https://github.com/uber/kraken/blob/v0.1.27/lib/backend/testfs/server.go#L165-L173","label":"disclosure@vulncheck.com"},{"url":"https://github.com/uber/kraken/issues/645","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/uber-kraken-through-0.1.29-path-traversal-via-tag-parameter","label":"disclosure@vulncheck.com"},{"url":"https://github.com/uber/kraken/issues/645","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-21T15:41:31.488017Z"},"epss":0.00505,"epssPercentile":0.42019,"ingestedAt":"2026-09-16T21:05:36.887Z","slug":"CVE-2026-92791","body":"## Overview\n\nUber 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":208526,"id":"CVE-2026-92791","ts":1790007737209,"field":"exploit_available","old":"false","new":"true"}]}