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CVE-2026-123198LMFDB before commit 01829bd Unauthenticated Server-Side Template Injection via /knowledge/render/<ID>
LMFDB before commit 01829bd contains a server-side template injection vulnerability in the render_knowl function that allows unauthenticated attackers to inject Jinja expressions via request parameters. Attackers can supply crafted query-string values or 'content' data to /knowledge/render/<ID> to reach Python builtins and execute operating system commands as the web application account.
9.3 CRITICALEPSS 0.84%Not in KEVNVD: Received
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.3 | CRITICAL | 4.0VulnCheck (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 9.8 | CRITICAL | 3.1VulnCheck (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Details
- CVE ID
- CVE-2026-123198
- Status
- Received
- Assigner (CNA)
- VulnCheck
- Published
- Nov 5, 2026
- Last modified
- 2026-11-05 21:18 UTC
- Weaknesses
- CWE-1336 · Improper Neutralization of Special Elements Used in a Template Engine
Affected Products
As published by the CNA in the CVE record.
LMFDBLMFDB1 version range
- before 01829bd09b692c720aad30c952758a20630573d4
References
- github.com https://github.com/LMFDB/lmfdb/blob/c6e5bac205aa12de9edf584a06328fefa81de0de/lmfdb/knowledge/main.py#L747
- github.com https://github.com/LMFDB/lmfdb/commit/01829bd09b692c720aad30c952758a20630573d4
- github.com https://github.com/LMFDB/lmfdb/pull/7231
- github.com https://github.com/LMFDB/lmfdb/security/advisories/GHSA-6jw3-pmcx-2xww
- vulncheck.com https://www.vulncheck.com/advisories/lmfdb-before-commit-01829bd-unauthenticated-server-side-template-injection-via-knowledge-render-id