pymdown-extensions: exponential-backtracking ReDoS in caret, tilde, betterem, and magiclink inline processors
High-risk advisory
CVE-2026-67422
Summary
pymdown-extensions: exponential-backtracking ReDoS in caret, tilde, betterem, and magiclink inline processors
Why it matters
GitHub has published a reviewed security advisory for pymdown-extensions. Prioritize it with other application dependency updates, especially because EPSS places it in the 45% percentile.
Operator check
Check whether pymdown-extensions is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.6%; percentile: 45%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.