CVE-2026-80231

high

Description

A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a given hostname even when using a different Native CA Store setting (`CURLSSLOPT_NATIVE_CA`) than when the connection was created.

References

https://hackerone.com/reports/3969368

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-72169

https://curl.se/docs/CVE-2026-80231.json

https://curl.se/docs/CVE-2026-80231.html

Details

Source: Mitre, NVD

Published: 2026-09-06

Updated: 2026-09-15

Named Vulnerability: GHSA-r8j3-cwj5-4j73

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H