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VULNERABILITIES

CVE-2026-80231 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://hackerone.com/reports/3969368 CISA-ADPExploitMitigationThird Party Advisory
https://curl.se/docs/CVE-2026-80231.html curlMitigationPatchVendor Advisory
https://curl.se/docs/CVE-2026-80231.json curlVendor Advisory
https://hackerone.com/reports/3969368 curlExploitMitigationThird Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-488Exposure of Data Element to Wrong SessionCISA-ADP
CWE-488Exposure of Data Element to Wrong Sessioncurl

Affected Products

ProductVersions
haxx curl
>= 7.71.0, < 8.22.0

CPE

  • cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-80231
NVD Published Date:
Sep 6, 2026
NVD Last Modified:
Sep 15, 2026
Source:
curl
CVE-2026-80231 Details - Not Deferred