VULNERABILITY INTELLIGENCE

CVE-2026-80229

CVSS score7.5 HIGH
EPSS probability0.56%
CISA KEVNot currently listed
Published2026-09-06
Last modified2026-09-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • 2499f714-1537-4658-8207-48ae4bb9eae9: CWE-416
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-416

Primary references