lighttpd vulnerabilities and fixes

CVEs that mention lighttpd, ranked by priority. 2 tracked.

lighttpd has 2 tracked vulnerabilities, 2 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-08-04. Highest priority: CVE-2026-18753 (score 49/100).

• CVE-2026-18753 CRITICAL 9.1 The product firmware contains an embedded, static RSA private key utilized by the Lighttpd web server for TLS
• CVE-2026-18754 CRITICAL 9.1 The product firmware contains an embedded, static RSA private key utilized by the Lighttpd web server for TLS

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-2026-18753 currently ranks highest (49/100): The product firmware contains an embedded, static RSA private key utilized by the Lighttpd web server for TLS .

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