CVE-2026-27851
7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Open-Xchange GmbH | OX Dovecot Pro | 0 <= 3.1.4 | affected |
| Open-Xchange GmbH | OX Dovecot Pro | 0 <= 2.4.3 | affected |
Weaknesses
- CWE-235: Improper Handling of Extra Parameters
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
dovecot: Dovecot: SQL/LDAP injection via incorrect safe filter interpretation with variable expansion
Additional References
- https://access.redhat.com/security/cve/CVE-2026-27851
- https://bugzilla.redhat.com/show_bug.cgi?id=2476471
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27851.json
References
- https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0002.json
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