UBUNTU-CVE-2026-102555

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    UBUNTU-CVE-2026-102555

    Published: 29 Sept 2026Last Modified: 4 Nov 2026
    Upstream:
    CVE-2026-102555
    Aliases:
    USN-8975-1

    Summary:

    Details: A flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL bytes, the decoded length could remain uninitialized and be used as the size of the returned GBytes. This can lead to an out-of-bounds read or application crash when processing a crafted data URI.

    References: https://ubuntu.com/security/CVE-2026-102555, https://www.cve.org/CVERecord?id=CVE-2026-102555, https://bugzilla.redhat.com/show_bug.cgi?id=2543224, https://gitlab.gnome.org/GNOME/libsoup/-/work_items/554, https://access.redhat.com/security/cve/CVE-2026-102555, https://ubuntu.com/security/notices/USN-8975-1

    Affected packages

    Package

    Name: libsoup2.4

    Purl: pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra-legacy%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.52.2-1ubuntu0.3+esm9

    Affected versions

    2.50.0-2debian1

    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
    UBUNTU-CVE-2026-102555 | CVE-DB