CVE-2026-80229

Description

When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership reference; destroying the easy handle prematurely frees this context while the active connection retains a dangling pointer, leading to a heap-use-after-free upon subsequent I/O or post-handshake operations.

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Produits concernés

• curl
• Haxx curl

Scores CVSS

Faiblesses (CWE)

• CWE-416

Références

• https://curl.se/docs/CVE-2026-80229.html PatchVendor Advisory
• https://curl.se/docs/CVE-2026-80229.json Vendor Advisory
• https://hackerone.com/reports/3969255 ExploitMitigationThird Party Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories