LDAP Injection Affecting dovecot-pgsql package, versions *


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-RHEL9-DOVECOTPGSQL-15871594
  • published1 Apr 2026
  • disclosed27 Mar 2026

Introduced: 27 Mar 2026

NewCVE-2026-27860  (opens in a new tab)
CWE-90  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 dovecot-pgsql.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dovecot-pgsql package and not the dovecot-pgsql package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.

CVSS Base Scores

version 3.1