8.2

CVE-2026-24031: dovecot SQL Injection

CVSS: 8.2v3.1HighModified
AliasesALPINE-CVE-2026-24031UBUNTU-CVE-2026-24031DEBIAN-CVE-2026-24031
Published 27-03-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-24031 is a high (CVSS 8.2) SQL Injection vulnerability in dovecot. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.2% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (NVD)
EPSS score
0.40%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 4
OPENSUSE-SU-2026:10442-1OPENSUSE-SU-2026:20554-1SUSE-SU-2026:21208-1USN-8136-1

Timeline

  1. 27-03-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

0.00 pp

From 0.40% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.40%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Alpine1 product
  • dovecot< 2.4.3-r0
Debian1 product
  • dovecot< 1:2.4.1+dfsg1-6+deb13u4 | < 1:2.4.3+dfsg1-1
Dovecot1 product
Open-xchange1 product
Open-xchange gmbh1 product
Ubuntu1 product
  • dovecot< 1:2.4.1+dfsg1-5ubuntu4.1

6 vendors · 6 products

References

9 links