JLSEC-2025-33

    Dashboard / Vulnerabilities / JLSEC-2025-33

    JLSEC-2025-33

    Published: 10 Oct 2025Last Modified: 25 Jul 2026
    Upstream:
    CVE-2023-27538

    Summary: An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a...

    Details: An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.

    References: https://hackerone.com/reports/1898475, https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html, https://security.gentoo.org/glsa/202310-12, https://security.netapp.com/advisory/ntap-20230420-0010/

    Affected packages

    Package

    Name: CURL_jll

    Purl: pkg:julia/CURL_jll?uuid=b21e61f3-bafc-59ac-ab14-4c5c62d6588d

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -8.5.0+0

    Affected versions

    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
    JLSEC-2025-33 | CVE-DB