Vulnerability details
CVE-2026-123198
LMFDB LMFDB
LMFDB before commit 01829bd Unauthenticated Server-Side Template Injection via /knowledge/render/<ID>
CVSS 4.0
9.3Critical
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| LMFDB | LMFDB | v < 01829bd09b692c720aad30c952758a20630573d4 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://github.com/LMFDB/lmfdb/pull/7231 patchissue-tracking
- https://github.com/LMFDB/lmfdb/commit/01829bd09b692c720aad30c952758a20630573d4 patch
- https://github.com/LMFDB/lmfdb/blob/c6e5bac205aa12de9edf584a06328fefa81de0de/lmfdb/knowledge/main.py#L747 technical-description
- https://www.vulncheck.com/advisories/lmfdb-before-commit-01829bd-unauthenticated-server-side-template-injection-via-knowledge-render-id third-party-advisory
- https://github.com/LMFDB/lmfdb/security/advisories/GHSA-6jw3-pmcx-2xww vendor-advisory
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Details
- Published
- 2026-11-05
- Last updated
- 2026-11-06
- State
- Published
- Assigner (CNA)
- VulnCheck
- Kolun priority
- 29 · Low
Exploit prediction (EPSS)
0.84%
Probability of exploitation in 30 days
58.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-1336Improper Neutralization of Special Elements Used in a Template Engine