PatchTheCVElibcoap vulnerabilities and fixes
Recent CVEs affecting libcoap, with upgrade or downgrade steps. 1 tracked.
libcoap has 1 tracked vulnerability, 1 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-04-17. Highest priority: CVE-2026-29013 (score 45/100).
- CVE-2026-29013 CRITICAL 9.8 UPGRADE libcoap contains out-of-bounds read vulnerabilities in OSCORE Appendix B.2 CBOR unwrap handling where get_byte
FAQ
How do I fix libcoap 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 libcoap being exploited right now?
None of the tracked libcoap CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which libcoap CVE should I patch first?
CVE-2026-29013 currently ranks highest (45/100): libcoap contains out-of-bounds read vulnerabilities in OSCORE Appendix B.2 CBOR unwrap handling where get_byte.