CVE-2026-123198

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    CVE-2026-123198

    Published: 5 Nov 2026Last Modified: 7 Nov 2026

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

    Details: 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.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123198.json, https://github.com/LMFDB/lmfdb/security/advisories/GHSA-6jw3-pmcx-2xww, https://nvd.nist.gov/vuln/detail/CVE-2026-123198, https://www.vulncheck.com/advisories/lmfdb-before-commit-01829bd-unauthenticated-server-side-template-injection-via-knowledge-render-id, https://github.com/LMFDB/lmfdb/commit/01829bd09b692c720aad30c952758a20630573d4, https://github.com/LMFDB/lmfdb/pull/7231, https://github.com/LMFDB/lmfdb, https://github.com/LMFDB/lmfdb/blob/c6e5bac205aa12de9edf584a06328fefa81de0de/lmfdb/knowledge/main.py#L747

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -01829bd09b692c720aad30c952758a20630573d4

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-123198 | CVE-DB