CVE-2026-123198 PUBLISHED

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

Assigner: VulnCheck
Reserved: 05.11.2026 Published: 05.11.2026 Updated: 05.11.2026

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 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
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	LMFDB
Product	LMFDB
Versions	Default: unaffected affected from 0 to 01829bd09b692c720aad30c952758a20630573d4 (excl.)

CVE-2026-123198 PUBLISHED

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

Metrics

Product Status

Credits

References

Problem Types