{"id":"CVE-2026-57171","title":"Compliance-trestle (Trestle) is a Python SDK and command-line tool for managing OSCAL compliance documents","summary":"Compliance-trestle (Trestle) is a Python SDK and command-line tool for managing OSCAL compliance documents. In versions before 3.12.4 and versions 4.0.0 through 4.0.3, the catalog-generate, profile-generate, and ssp-generate author comma…","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-22"],"published":"2026-08-26","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:09:13.080","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-57171","references":[{"url":"https://github.com/oscal-compass/compliance-trestle/commit/37ed44f5f2e074202c8eb7c2f203c05d19461cdc","label":"security-advisories@github.com"},{"url":"https://github.com/oscal-compass/compliance-trestle/releases/tag/v4.1.0","label":"security-advisories@github.com"},{"url":"https://github.com/oscal-compass/compliance-trestle/security/advisories/GHSA-4q5v-7g7x-j79w","label":"security-advisories@github.com"},{"url":"https://github.com/oscal-compass/compliance-trestle/security/advisories/GHSA-r4vp-3vw6-r2x5","label":"security-advisories@github.com"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57171"},{"url":"https://github.com/oscal-compass/compliance-trestle/pull/2270"},{"url":"https://github.com/oscal-compass/compliance-trestle/commit/5335ff873a2a68eb7de43df029bea09cadff22fd"},{"url":"https://github.com/oscal-compass/compliance-trestle/releases/tag/v3.12.4"},{"url":"https://github.com/advisories/GHSA-r4vp-3vw6-r2x5"}],"tags":["nvd","ghsa","pip"],"epss":0.00198,"epssPercentile":0.09903,"ingestedAt":"2026-09-09T21:22:45.554Z","aliases":["GHSA-r4vp-3vw6-r2x5"],"ecosystem":"pip","vendor":"compliance-trestle","product":"compliance-trestle","affected":["compliance-trestle < 3.12.4","compliance-trestle >= 4.0.0, < 4.1.0"],"patched":["compliance-trestle 3.12.4","compliance-trestle 4.1.0"],"scores":{"nvd":7.7,"ghsa":8.4},"slug":"CVE-2026-57171","body":"## Overview\n\nCompliance-trestle (Trestle) is a Python SDK and command-line tool for managing OSCAL compliance documents. In versions before 3.12.4 and versions 4.0.0 through 4.0.3, the catalog-generate, profile-generate, and ssp-generate author commands write generated Markdown to an attacker-influenced output path without path-traversal validation, allowing arbitrary file write outside the Trestle workspace. These commands join the user-supplied output argument onto the Trestle root and write to the result, but guard it only with an is_directory_name_allowed() task-name-collision check rather than the PathSecurityValidator.validate_local_path() guard used by the jinja command, so an absolute path or one containing traversal sequences escapes the workspace and writes files under an attacker-chosen location as the invoking process owner. The security boundary is crossed when a trusted CI job, shared service, or wrapper derives the output argument from repository-controlled, tenant-controlled, or otherwise untrusted data while expecting output to stay inside the workspace. When --force-overwrite is used, the selected output directory is first recursively deleted, extending the primitive to destruction of an attacker-chosen directory tree and enabling indirect code execution by overwriting files a pipeline later runs. This issue is fixed in versions 3.12.4 and 4.1.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-57171)\n\nAffected packages:\n\n- `compliance-trestle < 3.12.4`\n- `compliance-trestle >= 4.0.0, < 4.1.0`\n\nPatched in:\n\n- `compliance-trestle 3.12.4`\n- `compliance-trestle 4.1.0`\n\nSource: https://github.com/advisories/GHSA-r4vp-3vw6-r2x5","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}