CVE-2026-123198: LMFDB LMFDB

LMFDB before commit 01829bd Unauthenticated Server-Side Template Injection via /knowledge/render/<ID>

CVSS 9.3 CriticalCritical

Critical, because:

CVSS score 9.3: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 5 Nov 2026, 18:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
LMFDB	LMFDB pkg:github/lmfdb/lmfdb	affected before 01829bd09b692c720aad30c952758a20630573d4 git Other versions: unaffected

Identifiers

CVE-2026-123198

CNA

VulnCheck

Weakness (CWE)

CWE-1336

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.3	Critical	4.0	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	CNA (VulnCheck)Used for this record
9.8	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS No score.

Timeline

5 Nov 2026, 18:16 UTC Confirmed by the CVE List
5 Nov 2026, 18:19 UTC First seen by agentprime
5 Nov 2026, 19:17 UTC Confirmed by NVD

Sources

References from the CNA

github.com/LMFDB/lmfdb/security/advisories/GHSA-6jw3-pmcx-2xww vendor-advisory
github.com/LMFDB/lmfdb/pull/7231 patchissue-tracking
github.com/LMFDB/lmfdb/commit/01829bd09b692c720aad30c952758a20630573d4 patch
github.com/LMFDB/lmfdb/blob/c6e5bac205aa12de9edf584a06328fefa81de0de/lmfdb/knowledge/main.py#L747 technical-description
www.vulncheck.com/advisories/lmfdb-before-commit-01829bd-unauthenticated-server-side-template-injection-via-knowledge-render-id third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.