{"id":"CVE-2026-6968","title":"Multiple Path Traversal Variants in awslabs/tough","summary":"Incomplete path traversal fixes in awslabs/tough before tough-v0.22.0 allow remote authenticated users with delegated signing authority to write files outside intended output directories via absolute target names in copy_target/link_targ…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","cvssSource":"cna","cwe":["CWE-22"],"vendor":"AWS","product":"tough","affected":["tough < 0.22.0","tuftool < 0.15.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-04-24T20:09:33.745527Z"},"published":"2026-04-24","updated":"2026-10-20","sourceUpdated":"2026-10-20T18:26:03.243Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-6968","references":[{"url":"https://aws.amazon.com/security/security-bulletins/2026-019-aws/"},{"url":"https://github.com/awslabs/tough/releases/tag/tough-v0.22.0"},{"url":"https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0"},{"url":"https://crates.io/crates/tough/0.22.0"},{"url":"https://crates.io/crates/tuftool/0.15.0"},{"url":"https://github.com/awslabs/tough/security/advisories/GHSA-v57p-gppj-p9vg"}],"tags":["cve.org"],"epss":0.00643,"epssPercentile":0.4993,"ingestedAt":"2026-10-20T19:16:14.548Z","slug":"CVE-2026-6968","body":"## Overview\n\nIncomplete path traversal fixes in awslabs/tough before tough-v0.22.0 allow remote authenticated users with delegated signing authority to write files outside intended output directories via absolute target names in copy_target/link_target, symlinked parent directories in save_target, or symlinked metadata filenames in SignedRole::write, because write paths trust the joined destination path without post-resolution containment verification.\n\n\n\nWe recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.\n\n## Affected\n\n- `tough < 0.22.0`\n- `tuftool < 0.15.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}