Security
- [#698] Bumped pygments to 2.20.0: Resolves CVE-2026-4539 (GHSA-5239-wwwm-4pmq, ReDoS via inefficient regex for GUID matching). Transitive dependency via rich. (PR #698)
Details
CVE-2026-4539 / GHSA-5239-wwwm-4pmq
- Severity: Medium
- Vulnerability: ReDoS (Regular Expression Denial of Service) via inefficient regex in GUID matching
- Dependency chain: pygments (transitive via rich)
- Fix: Pinned pygments >= 2.20.0
What's Unchanged
- 1,537 tests passing
- No API or behavior changes
Upgrade
pip install --upgrade mcp-memory-serviceSee CHANGELOG.md for full version history.