CVE-2026-80230CWE-295

CVE-2026-80230

High · published September 6, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
29.9
In the wild
Unconfirmed
What it is

When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable

standard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and

`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on

connections established without a presented server certificate. Bypassing the

pinning check under these disabled-verification conditions allows

unauthenticated connections to succeed when they should be rejected.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00371 · 29.9th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2026-09-06T22:17Z
Affected products (1)
ProductVersionsFixed in
haxx/curl≥ 7.45.0, < 8.22.08.22.0
References (4)
EPSS history
Timeline
  • 08 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 06 SEP 17:48Z
    OpenSSL pinning bypass
    cvelistv5