CVE-2026-80230
Publication date 6 September 2026
Last updated 25 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| curl | 26.04 LTS resolute |
Fixed 8.18.0-1ubuntu2.7
|
| 24.04 LTS noble |
Fixed 8.5.0-2ubuntu10.15
|
|
| 22.04 LTS jammy |
Fixed 7.81.0-1ubuntu1.29
|
|
| 20.04 LTS focal |
Fixed 7.68.0-1ubuntu2.25+esm9
|
|
| 18.04 LTS bionic |
Fixed 7.58.0-2ubuntu3.24+esm14
|
|
| 16.04 LTS xenial |
Fixed 7.47.0-1ubuntu2.19+esm20
|
|
| 14.04 LTS trusty |
Not affected
|
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CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8820-1
- curl vulnerabilities
- 24 September 2026