htslib vulnerabilities

Recent CVEs affecting htslib products. 10 tracked.

htslib has 10 tracked vulnerabilities, 2 critical. A fixed release or vendor patch exists for 10. Most recent: 2026-03-18. Highest priority: CVE-2026-31966 (score 48/100).

• CVE-2026-31971 HIGH 8.1 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31970 HIGH 8.1 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31969 HIGH 8.1 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31968 HIGH 8.1 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31967 CRITICAL 9.1 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31966 CRITICAL 9.1 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31965 HIGH 8.2 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31964 HIGH 7.5 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31963 HIGH 8.1 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats
• CVE-2026-31962 HIGH 8.8 UPGRADE HTSlib is a library for reading and writing bioinformatics file formats

FAQ

How do I fix htslib 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 htslib being exploited right now?

None of the tracked htslib CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which htslib CVE should I patch first?

CVE-2026-31966 currently ranks highest (48/100): HTSlib is a library for reading and writing bioinformatics file formats.

Products

• htslib

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