Linux Distros Unpatched Vulnerability : CVE-2026-61907

medium Nessus Plugin ID 344518

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- An issue was discovered in Cyrus IMAP before 3.12.4. JMAP snooze bypasses the destination-mailbox ACL. An authenticated user with insert permissions on another user's snoozed mailbox could cause insertion of mail to that user's inbox, or any other of their mailboxes whose id was known to the user, despite having no insert permissions to the target mailbox. (CVE-2026-61907)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Medium

ID: 344518

File Name: unpatched_CVE_2026_61907.nasl

Version: 1.3

Type: Local

Agent: unix

Family: Misc.

Published: 9/10/2026

Updated: 9/11/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.2

Percentile: 50.53

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS Score Source: CVE-2026-61907

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:cyrus-imapd, p-cpe:/a:centos:centos:cyrus-imapd-devel, p-cpe:/a:centos:centos:cyrus-imapd-libs, p-cpe:/a:centos:centos:cyrus-imapd-utils, p-cpe:/a:centos:centos:cyrus-imapd-vzic, p-cpe:/a:centos:centos:cyrus-imapd, p-cpe:/a:centos:centos:perl-cyrus, p-cpe:/a:debian:debian_linux:cyrus-imapd, p-cpe:/a:redhat:enterprise_linux:cyrus-imapd-devel, p-cpe:/a:redhat:enterprise_linux:cyrus-imapd-libs, p-cpe:/a:redhat:enterprise_linux:cyrus-imapd-utils, p-cpe:/a:redhat:enterprise_linux:cyrus-imapd-vzic, p-cpe:/a:redhat:enterprise_linux:cyrus-imapd, p-cpe:/a:redhat:enterprise_linux:perl-cyrus

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/9/2026

Reference Information

CVE: CVE-2026-61907

Detections

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