DEBIAN-CVE-2026-61911

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    DEBIAN-CVE-2026-61911

    Published: 9 Sept 2026Last Modified: 11 Sept 2026
    Upstream:
    CVE-2026-61911

    Summary:

    Details: An issue was discovered in Cyrus IMAP before 3.12.4. There is a Sieve mailbox existence oracle. An authenticated user could install a Sieve script that probed whether another user's private mailbox existed, or read the value of shared mailbox annotations, by observing which fileinto branch fired during LMTP delivery.

    References: https://security-tracker.debian.org/tracker/CVE-2026-61911

    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-2026-61911 | CVE-DB