UBUNTU-CVE-2026-116268

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    UBUNTU-CVE-2026-116268

    Published: 28 Oct 2026Last Modified: 7 Nov 2026
    Upstream:
    CVE-2026-116268

    Summary:

    Details: MIME::Field::ParamVal versions before 5.521 for Perl allow CPU exhaustion via unclosed comments in header parameters. The comment pattern used to parse Content-Type and Content-Disposition parameters scans from each "(" to the next ")". In a field with no ")", every "(" scans to the end of the header and fails, so parsing takes time quadratic in the header length. The field is parsed again on each attribute lookup, several times per MIME entity. A 40 KB header takes about 7 seconds to parse once.

    References: https://ubuntu.com/security/CVE-2026-116268, https://www.cve.org/CVERecord?id=CVE-2026-116268, https://metacpan.org/release/DSKOLL/MIME-tools-5.522/changes

    Affected packages

    Package

    Name: libmime-tools-perl

    Purl: pkg:deb/ubuntu/libmime-tools-perl?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    5.503-1

    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-2026-116268 | CVE-DB