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CVE-2026-54757— Trestle has Server-Side Template Injection (SSTI) via Recursive Template Re-evaluation of Untrusted Data

Quick assessment

Affected
oscal-compass compliance-trestle
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Compliance-trestle（Trestle）是一个用于管理 OSCAL 合规文档的 Python SDK 和命令行工具。在 3.12.4 之前的版本以及 4.0.0 至 4.0.3 版本中，Trestle 存在服务器端模板注入漏洞，可能导致远程代码执行。该漏洞源于 MDCleanInclude 和 MDSectionInclude 这两个 Jinja2 标签使用非沙箱化的 jinja2.Environment，对不受信任的 Markdown 内容重新解析并作为模板源代码处理。攻击者若能够控制 Trestl

CVSS 7.8 · High EPSS 0.25% · P16

Affected Version Matrix 2

VendorProduct Version RangeStatus
oscal-compass compliance-trestle < 3.12.4 affected
>= 4.0.0, < 4.1.0 affected
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I. Basic Information for CVE-2026-54757

Vulnerability Information
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Vulnerability Title
Trestle has Server-Side Template Injection (SSTI) via Recursive Template Re-evaluation of Untrusted Data
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
oscal-compass compliance-trestle < 3.12.4 -

II. Public POCs for CVE-2026-54757

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 7984 chars
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III. Intelligence Information for CVE-2026-54757

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Patches & Fixes for CVE-2026-54757 (1)

Vendor Advisories for CVE-2026-54757 (1)

Same Patch Batch · oscal-compass · 2026-08-25 · 4 CVEs total

CVE-2026-52776 8.6 HIGH Trestle URLSecurityValidator SSRF allowlist bypass via IPv4-mapped IPv6 and 0.0.0.0
CVE-2026-57170 7.8 HIGH Trestle SSTI in Jinja2 include tags allows arbitrary code execution (Incomplete fix of CVE
CVE-2026-57171 7.7 HIGH Trestle is vulnerable to arbitrary file write via path traversal in author generate comman

IV. Related Vulnerabilities

Same product: compliance-trestle
Same vendor: oscal-compass
Same weakness: CWE-94

V. Comments for CVE-2026-54757

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