PatchTheCVElibidn vulnerabilities and fixes
Recent CVEs affecting libidn, with upgrade or downgrade steps. 1 tracked.
libidn has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-06-23. Highest priority: CVE-2026-57053 (score 20/100).
- CVE-2026-57053 MEDIUM 4.0 UPGRADE GNU libidn before 1.44 is prone to out-of-bounds reads of uninitialized memory in the ToUnicode APIs because o
FAQ
How do I fix libidn 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 libidn being exploited right now?
None of the tracked libidn CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which libidn CVE should I patch first?
CVE-2026-57053 currently ranks highest (20/100): GNU libidn before 1.44 is prone to out-of-bounds reads of uninitialized memory in the ToUnicode APIs because o.