JLSEC-2025-30

    Dashboard / Vulnerabilities / JLSEC-2025-30

    JLSEC-2025-30

    Published: 10 Oct 2025Last Modified: 25 Jul 2026
    Upstream:
    CVE-2023-27536

    Summary: An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which...

    Details: An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the `CURLOPT_GSSAPI_DELEGATION` option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the `CURLOPT_GSSAPI_DELEGATION` option has been changed.

    References: https://hackerone.com/reports/1895135, https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/, 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-2025-30 | CVE-DB