undici vulnerable to Denial of Service via TLS 1.2 certificate-changing renegotiation
High-risk advisory
CVE-2026-87018
Summary
undici vulnerable to Denial of Service via TLS 1.2 certificate-changing renegotiation
Why it matters
GitHub has published a reviewed security advisory for undici. Prioritize it with other application dependency updates, especially because EPSS places it in the 8% percentile.
Operator check
Check whether undici is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.2%; percentile: 8%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.