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CVE-2026-92392

CVE-2026-92392 · HTTP/2 upload Use-After-Free

This page contains facts from public vulnerability sources. Check the original advisory before updating.

During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server (with reason `HTTP_1_1_REQUIRED` or `REFUSED_STREAM`) leading to a use after free of a `struct Curl_easy` object.

CVSS 8.1 · High · EPSS 0.9% · Public exploit · Fix available

Published
Updated

Stack: system

Affected products and versions

  • curl

    Versions
    • ≥ 8.22.0, ≤ 8.22.0: Affected (semver)
    • ≥ 8.21.0, ≤ 8.21.0: Affected (semver)
    • ≥ 8.20.0, ≤ 8.20.0: Affected (semver)
    • ≥ 8.19.0, ≤ 8.19.0: Affected (semver)
    • ≥ 8.18.0, ≤ 8.18.0: Affected (semver)
    • ≥ 8.17.0, ≤ 8.17.0: Affected (semver)
    • ≥ 8.16.0, ≤ 8.16.0: Affected (semver)
    • ≥ 8.15.0, ≤ 8.15.0: Affected (semver)
    • ≥ 8.14.1, ≤ 8.14.1: Affected (semver)
    • ≥ 8.14.0, ≤ 8.14.0: Affected (semver)
    • ≥ 8.13.0, ≤ 8.13.0: Affected (semver)
    • ≥ 8.12.1, ≤ 8.12.1: Affected (semver)
    • ≥ 8.12.0, ≤ 8.12.0: Affected (semver)

    No fix published

  • curl Debian:13

    Versions
    • 8.14.1-2
    • 8.14.1-2+deb13u1
    • 8.14.1-2+deb13u2
    • 8.14.1-2+deb13u2~bpo13+1
    • 8.14.1-2+deb13u3
    • 8.14.1-2+deb13u4
    • 8.14.1-2+deb13u5
    Affected ranges
    • ECOSYSTEM: < 8.14.1-2+deb13u7

    Update to 8.14.1-2+deb13u7

  • curl Debian:14

    Versions
    • 8.14.1-2
    • 8.14.1-2+exp1
    • 8.15.0-1
    • 8.15.0-1~bpo13+1
    • 8.15.0-1~exp1
    • 8.15.0~rc1-1exp1
    • 8.15.0~rc2-1~exp1
    • 8.15.0~rc3-1~exp1
    • 8.16.0-1
    • 8.16.0-1+exp1
    • 8.16.0-1~bpo13+1
    • 8.16.0-2
    • 8.16.0-3
    • 8.16.0-4
    • 8.16.0-4~bpo13+1
    • 8.16.0~rc1-1~exp1
    • 8.16.0~rc2-1
    • 8.16.0~rc2-2
    • 8.16.0~rc3-1
    • 8.17.0-1
    • 8.17.0-2
    • 8.17.0-3
    • 8.17.0~rc1-1~exp1
    • 8.17.0~rc2-1
    • 8.17.0~rc3-1
    • 8.18.0-1
    • 8.18.0-1~bpo13+1
    • 8.18.0-2
    • 8.18.0~rc1-1+exp1
    • 8.18.0~rc2-1
    • 8.18.0~rc3-1
    • 8.19.0-1
    • 8.19.0-1+exp1
    • 8.19.0-1~bpo13+1
    • 8.19.0-2
    • 8.19.0-3
    • 8.19.0-3+exp1
    • 8.19.0-3+exp2
    • 8.19.0~rc1-1~exp1
    • 8.19.0~rc2-1
    • 8.19.0~rc2-2
    • 8.19.0~rc3-1
    • 8.20.0-1
    • 8.20.0-1+exp
    • 8.20.0-2
    • 8.20.0-2+exp1
    • 8.20.0-2~bpo13+1
    • 8.20.0-3
    • 8.20.0-4
    • 8.20.0-5
    • 8.20.0-5~bpo13+1
    • 8.20.0~rc1-1+exp1
    • 8.20.0~rc1-1+exp2
    • 8.20.0~rc1-1+exp3
    • 8.20.0~rc2-1
    • 8.20.0~rc2-1+exp1
    • 8.20.0~rc3-1
    • 8.20.0~rc3-1+exp1
    • 8.21.0-1
    • 8.21.0-1+exp1
    • 8.21.0-2
    • 8.21.0-2+exp1
    • 8.21.0-2~bpo13+1
    • 8.21.0~rc1-1+exp1
    • 8.21.0~rc2-1
    • 8.21.0~rc2-1+exp1
    • 8.21.0~rc3-1
    • 8.21.0~rc3-1+exp1
    • 8.22.0-1
    • 8.22.0-1+exp1
    • 8.22.0~rc2-1
    • 8.22.0~rc2-2
    • 8.22.0~rc3-1
    • 8.22.0~rc3-1+exp1
    • 8.23.0-1
    • 8.23.0~rc1-1
    • 8.23.0~rc1-2
    • 8.23.0~rc2-1
    • 8.23.0~rc2-1+exp1
    • 8.23.0~rc3-1
    • 8.23.0~rc3-1+exp1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • curl Ubuntu:26.10

    Versions
    • 8.18.0-1ubuntu2
    • 8.20.0-2ubuntu1
    • 8.20.0-2ubuntu3
    • 8.20.0-2ubuntu10
    • 8.20.0-2ubuntu11
    Affected ranges
    • ECOSYSTEM: < 8.20.0-2ubuntu11.1

    Update to 8.20.0-2ubuntu11.1

  • curl Ubuntu:26.04:LTS

    Versions
    • 8.14.1-2ubuntu1
    • 8.17.0-1ubuntu1
    • 8.18.0-1ubuntu1
    • 8.18.0-1ubuntu2
    • 8.18.0-1ubuntu2.1
    • 8.18.0-1ubuntu2.2
    • 8.18.0-1ubuntu2.3
    • 8.18.0-1ubuntu2.4
    • 8.18.0-1ubuntu2.5
    • 8.18.0-1ubuntu2.7
    Affected ranges
    • ECOSYSTEM: < 8.18.0-1ubuntu2.8

    Update to 8.18.0-1ubuntu2.8

Original sources

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