CVE-2026-45774: Oscal-Compass Compliance-Trestle

Medium severity, CVSS 6.9. EPSS: 0.5% chance of exploitation in the next 30 days.

compliance-trestle is a tooling platform for managing compliance as code. Prior to versions 3.12.2 and 4.0.3, the compliance-trestle library's profile import mechanism resolves `trestle://` URIs and relative file paths by joining them with `trestle_root` and calling `.resolve()`, but performs no boundary check to ensure the resolved path stays within the trestle workspace. An attacker can craft a malicious OSCAL profile YAML with `imports[].href` containing path traversal sequences to read arbitrary files from the server filesystem. Versions 3.12.3 and 4.0.3 patch the issue.

Affected products

• Oscal-Compass Compliance-Trestle: before 3.12.2 (fixed in 3.12.2); from 4.0.0, before 4.0.3 (fixed in 4.0.3)

Published 2026-08-13. Last modified 2026-09-18.