https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T23:05:21.842238+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/rustsec-2023-0052 RUSTSEC-2023-0052 — webpki: CPU denial of service in certificate path building 2026-09-29T23:05:22.082482+00:00

Affected: crates.io: webpki

When this crate is given a pathological certificate chain to validate, it will spend CPU time exponential with the number of candidate certificates at each step of path building.

Both TLS clients and TLS servers that accept client certificate are affected.

This was previously reported in <https://github.com/briansmith/webpki/issues/69> and re-reported recently by Luke Malinowski.

webpki 0.22.1 included a partial fix and webpki 0.22.2 added further fixes.