CVE-2026-80230
Last modified
CVE-2026-80230 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 7.45.0, < 8.22.0 |
References
- https://curl.se/docs/CVE-2026-80230.htmlPatch, Vendor Advisory
- https://curl.se/docs/CVE-2026-80230.jsonVendor Advisory
- https://hackerone.com/reports/3969300Exploit, Mitigation, Third Party Advisory
- https://hackerone.com/reports/3969300Exploit, Mitigation, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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