CVE-2026-27851: Improper Handling of Extra Parameters in Open-Xchange GmbH OX Dovecot Pro
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.
AI Analysis
Technical Summary
The vulnerability arises from improper handling of extra parameters when using the safe filter with variable expansion in OX Dovecot Pro. Specifically, all following pipelines on the same string are incorrectly interpreted as safe, which can cause unsafe data to be unescaped. This behavior can be exploited to perform SQL or LDAP injection attacks in authentication contexts. The CVSS 3.1 base score is 7.4, indicating high severity. There is no vendor advisory or patch information available at this time, and no known exploits in the wild.
Potential Impact
Successful exploitation could allow attackers to perform SQL or LDAP injection attacks during authentication, potentially leading to unauthorized access or data compromise. The vulnerability affects confidentiality and integrity but not availability. No public exploits have been reported so far.
Mitigation Recommendations
No official fix or patch is currently available. Users should avoid using the safe filter with variable expansion in OX Dovecot Pro until a fixed version is released. Monitor vendor advisories for updates regarding remediation.
CVE-2026-27851: Improper Handling of Extra Parameters in Open-Xchange GmbH OX Dovecot Pro
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability arises from improper handling of extra parameters when using the safe filter with variable expansion in OX Dovecot Pro. Specifically, all following pipelines on the same string are incorrectly interpreted as safe, which can cause unsafe data to be unescaped. This behavior can be exploited to perform SQL or LDAP injection attacks in authentication contexts. The CVSS 3.1 base score is 7.4, indicating high severity. There is no vendor advisory or patch information available at this time, and no known exploits in the wild.
Potential Impact
Successful exploitation could allow attackers to perform SQL or LDAP injection attacks during authentication, potentially leading to unauthorized access or data compromise. The vulnerability affects confidentiality and integrity but not availability. No public exploits have been reported so far.
Mitigation Recommendations
No official fix or patch is currently available. Users should avoid using the safe filter with variable expansion in OX Dovecot Pro until a fixed version is released. Monitor vendor advisories for updates regarding remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- OX
- Date Reserved
- 2026-02-24T08:46:09.372Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0333e5cbff5d8610ef1d25
Added to database: 5/12/2026, 2:06:29 PM
Last enriched: 5/12/2026, 2:21:41 PM
Last updated: 5/13/2026, 4:49:43 AM
Views: 5
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