UBUNTU-CVE-2026-80230

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    UBUNTU-CVE-2026-80230

    Published: 6 Sept 2026Last Modified: 26 Sept 2026
    Upstream:
    CVE-2026-80230
    Aliases:
    USN-8820-1

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2026-80230, https://www.cve.org/CVERecord?id=CVE-2026-80230, https://curl.se/docs/CVE-2026-80230.html, https://github.com/curl/curl/commit/5267ed859d545534d0c21, https://ubuntu.com/security/notices/USN-8820-1

    Affected packages

    Package

    Name: curl

    Purl: pkg:deb/ubuntu/curl?arch=source&distro=esm-infra-legacy%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7.47.0-1ubuntu2.19+esm20

    Affected versions

    7.43.0-1ubuntu2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2026-80230 | CVE-DB