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CVE PROGRAM SOURCE RECORD3.1 Low

CVE-2026-52681

Sieve CPU resource usage is tracked in the compiled script, so an attacker that has valid credentials can reset the accounting by repeatedly changing the active script. Compiled sc

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Status
Published
Published
Updated
Assigning organization
OX

Description

Sieve CPU resource usage is tracked in the compiled script, so an attacker that has valid credentials can reset the accounting by repeatedly changing the active script. Compiled script files are also not removed when a script is deleted or renamed. The configured Sieve CPU limit can be bypassed, allowing sustained CPU consumption, and the leftover files increase disk consumption. Both can cause degradation of service for mail delivery. Monitor system for abnormal CPU usage and disk consumption. Update to non-vulnerable version. No publicly available exploits are known.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Open-Xchange GmbH OX Dovecot Pro

Default version status: unaffected

  • 2.3.15 to < 2.3.22.2affected
  • 3.0.0 to < 3.0.7affected
  • 3.1.0 to < 3.1.6affected

Open-Xchange GmbH OX Dovecot CE

Default version status: unaffected

  • 2.3.15 to < 2.4.5affected

References