CVE-2026-27851
CRITICAL
INFO
Priority: 0.04
BB Relevance:
78/100
Published: 2026-05-12
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
None
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 Software (2)
| Vendor | Product | Version |
|---|---|---|
| dovecot | dovecot | < 2.4.4 |
| open-xchange | dovecot | < 3.1.5 |
References & Advisories (4)
Vendor Advisory