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.

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Mon, 18 May 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Dovecot
Dovecot dovecot
Open-xchange dovecot
CPEs cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*
cpe:2.3:a:open-xchange:dovecot:*:*:*:*:pro:*:*:*
Vendors & Products Dovecot
Dovecot dovecot
Open-xchange dovecot

Tue, 12 May 2026 15:45:00 +0000

Type Values Removed Values Added
Title Insecure Safe Filter in Open‑Xchange OX Dovecot Pro Enabling Injection Attacks
First Time appeared Open-xchange
Open-xchange ox Dovecot Pro
Vendors & Products Open-xchange
Open-xchange ox Dovecot Pro

Tue, 12 May 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 12 May 2026 14:00:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-235
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: OX

Published:

Updated: 2026-05-12T15:06:35.962Z

Reserved: 2026-02-24T08:46:09.372Z

Link: CVE-2026-27851

cve-icon Vulnrichment

Updated: 2026-05-12T15:06:30.355Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-12T14:16:56.857

Modified: 2026-05-18T17:29:09.793

Link: CVE-2026-27851

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-12T15:30:18Z

Weaknesses