CVE-2026-18924

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    CVE-2026-18924

    Published: 6 Sept 2026Last Modified: 17 Sept 2026

    Summary: HTTP/2 server push UAF

    Details: A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections with other handles, can lead to use-after-free in the cleanup process.

    References: https://curl.se/docs/CVE-2026-18924.html, https://curl.se/docs/CVE-2026-18924.json, https://hackerone.com/reports/3916059, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18924.json, https://nvd.nist.gov/vuln/detail/CVE-2026-18924, https://github.com/curl/curl.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 1a7f66a3de2625d10f65415e6eb3e56067dc0555
    Fixed -01346829096c61b372692f6dc43ffa778c6caccd

    Affected versions

    7.44.0

    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-2026-18924 | CVE-DB