PatchTheCVElighttpd vulnerabilities and fixes
Recent CVEs affecting lighttpd, with upgrade or downgrade steps. 1 tracked.
lighttpd has 1 tracked vulnerability, 1 critical. A fixed release or vendor patch exists for 0. Most recent: 2025-11-03. Highest priority: CVE-2025-12642 (score 44/100).
- CVE-2025-12642 CRITICAL 9.1 DOWNGRADE lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing
FAQ
How do I fix lighttpd 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 lighttpd being exploited right now?
None of the tracked lighttpd CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which lighttpd CVE should I patch first?
CVE-2025-12642 currently ranks highest (44/100): lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing.