{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.12.4"
              },
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.1.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5855179606e0d0f7656f7455b930ef12d32071e6"
            },
            {
              "introduced": "d965ee5a9a1c2680c80bfa3e63cd75f4fc488881"
            },
            {
              "fixed": "654bfaa0768aa6e4d495911e713c5f4e061e187e"
            }
          ],
          "repo": "https://github.com/oscal-compass/compliance-trestle",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jw39-3688-r4rx"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54757.json"
  },
  "details": "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, Trestle is vulnerable to server-side template injection that can lead to remote code execution. This occurs because the MDCleanInclude and MDSectionInclude Jinja2 tags re-parse untrusted Markdown content as template source code using a non-sandboxed jinja2.Environment. An attacker who controls content that Trestle renders, such as a crafted workspace Markdown file, a third-party SSP document, or a YAML lookup-table value, can inject a Jinja2 expression that traverses Python object internals to execute arbitrary operating system commands in the context of the Trestle process. This issue is fixed in versions 3.12.4 and 4.1.0.",
  "id": "CVE-2026-54757",
  "modified": "2026-08-28T11:31:02.892185834Z",
  "published": "2026-08-25T23:02:12.422Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54757.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/oscal-compass/compliance-trestle/security/advisories/GHSA-jw39-3688-r4rx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54757"
    },
    {
      "type": "FIX",
      "url": "https://github.com/oscal-compass/compliance-trestle/commit/0f82d19bd42f9cc0f1b3acd7fc3f6dafe3b6ae10"
    },
    {
      "type": "FIX",
      "url": "https://github.com/oscal-compass/compliance-trestle/commit/5335ff873a2a68eb7de43df029bea09cadff22fd"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Trestle has Server-Side Template Injection (SSTI) via Recursive Template Re-evaluation of Untrusted Data"
}