Trestle SSTI in Jinja2 include tags allows arbitrary code execution (Incomplete fix of CVE-2026-46439)

Reporter: Cavan Loughran, Celvex Group Inc.Summary-------The fix for CVE-2026-46439 3.12.2 / 4.0.3 removed the recursive re-render loop in trestle/core/commands/author/jinja.py rendertemplate, but the custom include tags in trestle/core/jinja/tags.py MDSectionInclude, MDCleanInclude still re-pars...

Trestle is vulnerable to arbitrary file write via path traversal in author generate commands (Incomplete fix of CVE-2026-46345)

At a glance- Actor: attacker who controls the -o/--output argument to trestle author catalog,profile,ssp-generate e.g. via a CI pipeline that derives the output directory from repository-controlled data- Primitive: attacker-controlled --output value reaches trestleroot / args.output write sink wi...

EUVD-2026-66225

Trestle is vulnerable to arbitrary file write via path traversal in author generate commands Incomplete fix of CVE-2026-46345...

Directory Traversal

Overview compliance-trestle is a Tools to manage & autogenerate python objects representing the OSCAL layers/models Affected versions of this package are vulnerable to Directory Traversal via the --output argument in the author catalog, author prof, author ssp, create, and replicate commands, whi...

Trestle is vulnerable to arbitrary file write via path traversal in author generate commands (Incomplete fix of CVE-2026-46345)

At a glance - Actor: attacker who controls the -o/--output argument to trestle author catalog,profile,ssp-generate e.g. via a CI pipeline that derives the output directory from repository-controlled data - Primitive: attacker-controlled --output value reaches trestleroot / args.output write sink...

GHSA-R4VP-3VW6-R2X5 Trestle is vulnerable to arbitrary file write via path traversal in author generate commands (Incomplete fix of CVE-2026-46345)

At a glance - Actor: attacker who controls the -o/--output argument to trestle author catalog,profile,ssp-generate e.g. via a CI pipeline that derives the output directory from repository-controlled data - Primitive: attacker-controlled --output value reaches trestleroot / args.output write sink...

EUVD-2026-66211

Trestle SSTI in Jinja2 include tags allows arbitrary code execution Incomplete fix of CVE-2026-46439...

Trestle SSTI in Jinja2 include tags allows arbitrary code execution (Incomplete fix of CVE-2026-46439)

Reporter: Cavan Loughran, Celvex Group Inc. Summary ------- The fix for CVE-2026-46439 3.12.2 / 4.0.3 removed the recursive re-render loop in trestle/core/commands/author/jinja.py rendertemplate, but the custom include tags in trestle/core/jinja/tags.py MDSectionInclude, MDCleanInclude still...

GHSA-MR95-65J8-9MXP Trestle SSTI in Jinja2 include tags allows arbitrary code execution (Incomplete fix of CVE-2026-46439)

Reporter: Cavan Loughran, Celvex Group Inc. Summary ------- The fix for CVE-2026-46439 3.12.2 / 4.0.3 removed the recursive re-render loop in trestle/core/commands/author/jinja.py rendertemplate, but the custom include tags in trestle/core/jinja/tags.py MDSectionInclude, MDCleanInclude still...

Improper Neutralization of Special Elements Used in a Template Engine

Overview compliance-trestle is a Tools to manage & autogenerate python objects representing the OSCAL layers/models Affected versions of this package are vulnerable to Improper Neutralization of Special Elements Used in a Template Engine via the parse method in trestle/core/jinja/tags.py, where...

Trestle has Server-Side Template Injection (SSTI) via Recursive Template Re-evaluation of Untrusted Data

ImpactA Server-Side Template Injection SSTI vulnerability exists in multiple locations of trestle's Jinja2 rendering pipeline due to a systemic pattern: untrusted data is re-parsed as Jinja2 template source code without sandboxing. This advisory tracks the root cause across all affected code...

PYSEC-2026-3817 Trestle has Server-Side Template Injection (SSTI) via Recursive Template Re-evaluation of Untrusted Data

Impact A Server-Side Template Injection SSTI vulnerability exists in multiple locations of trestle's Jinja2 rendering pipeline due to a systemic pattern: untrusted data is re-parsed as Jinja2 template source code without sandboxing. This advisory tracks the root cause across all affected code...

GHSA-JW39-3688-R4RX Trestle has Server-Side Template Injection (SSTI) via Recursive Template Re-evaluation of Untrusted Data

Impact A Server-Side Template Injection SSTI vulnerability exists in multiple locations of trestle's Jinja2 rendering pipeline due to a systemic pattern: untrusted data is re-parsed as Jinja2 template source code without sandboxing. This advisory tracks the root cause across all affected code...

Arbitrary Code Injection

Overview compliance-trestle is a Tools to manage & autogenerate python objects representing the OSCAL layers/models Affected versions of this package are vulnerable to Arbitrary Code Injection in the parse process. An attacker can execute arbitrary commands on the system by injecting malicious...

EUVD-2026-66209

Trestle has Server-Side Template Injection SSTI via Recursive Template Re-evaluation of Untrusted Data...

Trestle has Server-Side Template Injection (SSTI) via Recursive Template Re-evaluation of Untrusted Data

Impact A Server-Side Template Injection SSTI vulnerability exists in multiple locations of trestle's Jinja2 rendering pipeline due to a systemic pattern: untrusted data is re-parsed as Jinja2 template source code without sandboxing. This advisory tracks the root cause across all affected code...

CVE-2026-57171

A flaw was found in Compliance-trestle Trestle. The catalog-generate, profile-generate, and ssp-generate author commands are vulnerable to path traversal. A remote attacker can exploit this by providing a specially crafted output path, allowing them to write arbitrary files outside the intended...

CVE-2026-57170

A flaw was found in compliance-trestle. The custom Jinja2 include tags, mdsectioninclude and mdcleaninclude, incorrectly re-parse the content of included Markdown files as Jinja2 template code in a non-sandboxed environment. This vulnerability, known as Server-Side Template Injection SSTI, allows...

CVE-2026-54757

A flaw was found in Trestle, a Python SDK and command-line tool for managing OSCAL compliance documents. This vulnerability involves server-side template injection SSTI due to the MDCleanInclude and MDSectionInclude Jinja2 tags improperly re-parsing untrusted Markdown content as template source...

CVE-2026-52776

A flaw was found in compliance-trestle. The URLSecurityValidator, intended to prevent Server-Side Request Forgery SSRF, contains a bypass vulnerability. This bypass occurs because the validator does not properly handle IPv4-mapped IPv6 addresses or the unspecified address 0.0.0.0. A remote...