CVE-2026-80230
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductHaxx Curl
PublishedSep 6, 2026
First seenSep 6, 2026
Weakness typeCWE-295CWE-295
How to fix
Update
- haxx curl8.22.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| haxx curl | 7.45.0 ≤ v < 8.22.0 | 8.22.0 |
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