PatchTheCVEfontconfig vulnerabilities and fixes
Recent CVEs affecting fontconfig, with upgrade or downgrade steps. 1 tracked.
fontconfig has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 0. Most recent: 2026-03-25. Highest priority: CVE-2026-34085 (score 21/100).
- CVE-2026-34085 MEDIUM 5.9 DOWNGRADE fontconfig before 2.17.1 has an off-by-one error in allocation during sfnt capability handling, leading to a o
FAQ
How do I fix fontconfig 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 fontconfig being exploited right now?
None of the tracked fontconfig CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which fontconfig CVE should I patch first?
CVE-2026-34085 currently ranks highest (21/100): fontconfig before 2.17.1 has an off-by-one error in allocation during sfnt capability handling, leading to a o.