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No exploitation reportedAwaiting NVD analysis

CVE-2026-123198

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

No exploitation reported by the sources we read.

  • Published2026-11-05
  • WeaknessCWE-1336

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-11-0518:16CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • LMFDBother versions: not affected

    https://github.com/LMFDB/lmfdb

    Affected
    • < 01829bd09b692c720aad30c952758a20630573d4fixed in 01829bd09b692c720aad30c952758a20630573d4git

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-05

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-123198 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE record2026-11-05
  • CNACVSS 4.09.32026-11-05
  • CNACVSS 3.19.82026-11-05
  • CNAweakness (CWE)CWE-13362026-11-05

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
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
Published
2026-11-05

Frequently asked questions

What is CVE-2026-123198?

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.

Is CVE-2026-123198 actively exploited?

Active exploitation of CVE-2026-123198 has not been confirmed.

What is the CVSS score for CVE-2026-123198?

CVE-2026-123198 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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