Lemur: Incomplete fix for GHSA-v2wp-frmc-5q3v -- ACME authority update endpoint allows non-admin to replace `acme_url...

Date Aug 18, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product PyPI · lemur

CVE CVE-2026-71303

High-risk advisory CVE-2026-71303

Summary

Lemur: Incomplete fix for GHSA-v2wp-frmc-5q3v -- ACME authority update endpoint allows non-admin to replace `acme_url` with internal IP, bypassing allowlist

Why it matters

GitHub has published a reviewed security advisory for lemur. Prioritize it with other application dependency updates.

Operator check

Check whether lemur is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.

Sources

GitHub Advisory GHSA-v5rc-cpwc-cfpr NVD — CVE-2026-71303 Source reference

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