CVE-2026-80229 Affecting curl package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.9% (58th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-DEBIAN13-CURL-19498519
  • published2 Sept 2026
  • disclosed6 Sept 2026

Introduced: 2 Sep 2026

NewCVE-2026-80229  (opens in a new tab)

How to fix?

There is no fixed version for Debian:13 curl.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1