Vulnerability in lepture mistune

[ Description ]Official description

Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser's parse_link_text function that allows unauthenticated attackers to exhaust CPU with unbalanced brackets. Attackers can submit Markdown containing many unbalanced '[' or '![' characters, forcing repeated unbounded forward scans and tying up worker processes for minutes.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/lepture/mistune/security/advisories/GHSA-x2gr-6qf2-fc9x
• www.vulncheck.com/advisories/mistune-before-3.3.0-quadratic-time-dos-via-parse-link-text