SEPTEMBER 14, 2026
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Case File

CVE-2026-80230

HIGH · CVSS 7.5 EPSS 0.57%

Source: NVD + CISA KEV + EPSS · Published 2026-09-06 · Last synced 2026-09-14

CyberRota Analysis

AI-Generated

The vulnerability arises in libcurl when `CURLOPT_PINNEDPUBLICKEY` is used in conjunction with disabled peer verification options, allowing unauthenticated connections to bypass public key pinning checks. This could lead to potential man-in-the-middle attacks, as connections that should be rejected may succeed without proper certificate validation. Organizations using libcurl in security-sensitive applications should prioritize addressing this issue to ensure robust connection security.

CVE
CVE-2026-80230
Severity
HIGH
CVSS
7.5
EPSS
0.57%

Original NVD Description

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.

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