CVE-2026-80229

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    CVE-2026-80229

    Published: 6 Sept 2026Last Modified: 17 Sept 2026

    Summary: OpenSSL provider use-after-free

    Details: When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership reference; destroying the easy handle prematurely frees this context while the active connection retains a dangling pointer, leading to a heap-use-after-free upon subsequent I/O or post-handshake operations.

    References: https://curl.se/docs/CVE-2026-80229.html, https://curl.se/docs/CVE-2026-80229.json, https://hackerone.com/reports/3969255, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80229.json, https://nvd.nist.gov/vuln/detail/CVE-2026-80229, https://github.com/curl/curl.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 4dacb79fcdd9364c1083e06f6a011d797a344f47
    Fixed -01346829096c61b372692f6dc43ffa778c6caccd

    Affected versions

    8.14.0
    8.14.1

    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
    CVE-2026-80229 | CVE-DB