{"cve":"CVE-2026-57170","nvd":{"published":"2026-08-26T05:18:11.763","modified":"2026-09-09T21:09:13.080","status":"Deferred","description":"Compliance-trestle (Trestle) is a Python SDK and command-line tool for managing OSCAL compliance documents. In versions prior to 3.12.4 and 4.0.0 through 4.0.3, the custom Jinja2 include tags mdsection_include and md_clean_include re-parse the content of an included Markdown file as Jinja2 template code in a non-sandboxed environment, allowing server-side template injection that can lead to arbitrary code execution. The MDSectionInclude and MDCleanInclude tags in Trestle/core/jinja/tags.py pass included file content to Parser(self.environment, ...).parse(), splicing it into the host template's compilation, and the environment is a plain jinja2.Environment rather than a SandboxedEnvironment, so any expressions in the file are evaluated with full access to the usual SSTI gadget chain. Because Trestle's Markdown writers emit OSCAL prose and component-description fields verbatim, applying delimiter neutralization only to parameter tables, attacker-controlled OSCAL data such as a control statement, part prose, or component description containing Jinja2 syntax flows into an included Markdown file and is executed when the include tag re-parses it. This issue is fixed in version 4.1.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-94","CWE-1336"],"references":["https://github.com/oscal-compass/compliance-trestle/commit/0f82d19bd42f9cc0f1b3acd7fc3f6dafe3b6ae10","https://github.com/oscal-compass/compliance-trestle/commit/5335ff873a2a68eb7de43df029bea09cadff22fd","https://github.com/oscal-compass/compliance-trestle/security/advisories/GHSA-mr95-65j8-9mxp"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-57170","score":0.00235,"percentile":0.14474,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mr95-65j8-9mxp","url":"https://osv.dev/vulnerability/GHSA-mr95-65j8-9mxp","summary":"Trestle SSTI in Jinja2 include tags allows arbitrary code execution (Incomplete fix of CVE-2026-46439)","modified":"2026-10-01T17:56:13.600502565Z","packages":[{"ecosystem":"PyPI","name":"compliance-trestle","purl":"pkg:pypi/compliance-trestle","ranges":["<3.12.4"],"fixed":["3.12.4"]},{"ecosystem":"PyPI","name":"compliance-trestle","purl":"pkg:pypi/compliance-trestle","ranges":[">=4.0.0 <4.1.0"],"fixed":["4.1.0"]}]},{"id":"PYSEC-2026-4029","url":"https://osv.dev/vulnerability/PYSEC-2026-4029","summary":"Trestle SSTI in Jinja2 include tags allows arbitrary code execution (Incomplete fix of CVE-2026-46439)","modified":"2026-10-01T17:45:03.722276109Z","packages":[{"ecosystem":"PyPI","name":"compliance-trestle","purl":"pkg:pypi/compliance-trestle","ranges":["<3.12.4",">=4.0.0 <4.1.0"],"fixed":["3.12.4","4.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}