# CVE-2026-27851

## Summary

- **CVE ID:** CVE-2026-27851
- **Severity:** HIGH
- **CVSS Score:** 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** CWE-235
- **Published:** May 12, 2026
- **Last Modified:** Jul 15, 2026

## 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 Products

- Open-Xchange GmbH — OX Dovecot Pro (0)

## References

- [CNA](https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0002.json)
- [redhat-SADP](https://access.redhat.com/security/cve/CVE-2026-27851)
- [redhat-SADP](https://bugzilla.redhat.com/show_bug.cgi?id=2476471)
- [redhat-SADP](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27851.json)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.41%
- **EPSS Percentile:** 34.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-12._