Is CVE-2026-24031 actively exploited?

No active exploitation of CVE-2026-24031 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-24031 be exploited remotely?

Yes. CVE-2026-24031 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-24031?

CVE-2026-24031 has a CVSS score of 7.7 (HIGH).

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HIGH

CVE-2026-24031

CWE-89Published: March 27, 2026· Updated: Mar 30, 2026

7.7

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:16.9th

Official Description

Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user and user enumeration. Do not clear auth_username_chars. If this is not possible, install latest fixed version. No publicly available exploits are known.

NVD Source

Technical Analysis

CVE-2026-24031 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.7.

From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.