PatchTheCVElz4 flex vulnerabilities and fixes
Recent CVEs affecting lz4 flex, with upgrade or downgrade steps. 1 tracked.
Also searched as: lz4flex.
lz4 flex has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-03-20. Highest priority: CVE-2026-32829 (score 44/100).
- CVE-2026-32829 HIGH 7.5 UPGRADE lz4_flex is a pure Rust implementation of LZ4 compression/decompression
FAQ
How do I fix lz4 flex vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is lz4 flex being exploited right now?
None of the tracked lz4 flex CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which lz4 flex CVE should I patch first?
CVE-2026-32829 currently ranks highest (44/100): lz4_flex is a pure Rust implementation of LZ4 compression/decompression.