DEBIAN-CVE-2026-61909

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    DEBIAN-CVE-2026-61909

    Published: 9 Sept 2026Last Modified: 10 Sept 2026
    Upstream:
    CVE-2026-61909

    Summary:

    Details: An issue was discovered in Cyrus IMAP before 3.12.4. CalDAV/CardDAV multiget bypasses a per-href ACL. An authenticated DAV user with some shared access to another user's calendar or address book could read even unshared events or contacts by including the target hrefs in a calendar-multiget or addressbook-multiget REPORT.

    References: https://security-tracker.debian.org/tracker/CVE-2026-61909

    Affected packages

    Package

    Name: cyrus-imapd

    Purl: pkg:deb/debian/cyrus-imapd?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.10.0-1
    3.10.0~beta1-1
    3.10.0~beta1-2
    3.10.0~beta1-3
    3.10.0~beta2-1
    3.10.0~rc2-1
    3.10.1-1
    3.10.1-2
    3.10.1-3
    3.10.1-3~bpo12+1
    3.10.2-1
    3.10.2-1~bpo12+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
    DEBIAN-CVE-2026-61909 | CVE-DB