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Vulnerabilities / CVE-2026-27851

critical

CVE-2026-27851

dovecot: Dovecot: SQL/LDAP injection via incorrect safe filter interpretation with variable expansion

Published Modified CWE 235, 89
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Red Hat7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), Ubuntu (medium).

Description

When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped. This can enable SQL / LDAP injection attacks when used in authentication. Avoid using safe filter until on fixed version. No publicly available exploits are known.

Affected packages and fixed versions

SourcePackageFixed in
alpine 3.23dovecot2.4.4-r0
alpine 3.24dovecot2.4.4-r0
alpine edgedovecot2.4.4-r0
debian 13dovecot1:2.4.1+dfsg1-6+deb13u6
debian 14dovecot1:2.4.4+dfsg1-1
rapidfort alpine 3.20dovecot2.4.4-r0
rapidfort alpine 3.21dovecot2.4.4-r0
rapidfort alpine 3.22dovecot2.4.4-r0
rapidfort alpine 3.23dovecot2.4.4-r0
rapidfort debian 12dovecot1:2.4.1+dfsg1-6+deb13u6, 1:2.4.4+dfsg1-1
rapidfort debian 13dovecot1:2.4.1+dfsg1-6+deb13u6, 1:2.4.4+dfsg1-1
rapidfort fedora 43dovecot, dovecot-devel, dovecot-mysql and 2 more1:2.4.4-1.fc43
Show all 23 entries from 15 sources
SourcePackageFixed in
alpine 3.23dovecot2.4.4-r0
alpine 3.24dovecot2.4.4-r0
alpine edgedovecot2.4.4-r0
debian 13dovecot1:2.4.1+dfsg1-6+deb13u6
debian 14dovecot1:2.4.4+dfsg1-1
rapidfort alpine 3.20dovecot2.4.4-r0
rapidfort alpine 3.21dovecot2.4.4-r0
rapidfort alpine 3.22dovecot2.4.4-r0
rapidfort alpine 3.23dovecot2.4.4-r0
rapidfort debian 12dovecot1:2.4.1+dfsg1-6+deb13u6, 1:2.4.4+dfsg1-1
rapidfort debian 13dovecot1:2.4.1+dfsg1-6+deb13u6, 1:2.4.4+dfsg1-1
rapidfort fedora 43dovecot1:2.4.4-1.fc43
rapidfort fedora 43dovecot-devel1:2.4.4-1.fc43
rapidfort fedora 43dovecot-mysql1:2.4.4-1.fc43
rapidfort fedora 43dovecot-pgsql1:2.4.4-1.fc43
rapidfort fedora 43dovecot-pigeonhole1:2.4.4-1.fc43
Red Hatdovecotno fix listed
Red Hatdovecot-develno fix listed
Red Hatdovecot-mysqlno fix listed
Red Hatdovecot-pgsqlno fix listed
Red Hatdovecot-pigeonholeno fix listed
ubuntu 25.10dovecot1:2.4.1+dfsg1-5ubuntu4.2
ubuntu 26.04dovecot1:2.4.2+dfsg1-3ubuntu2.1

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.