Bug 2526671 - CVE-2026-33607 dovecot: Dovecot: Denial of Service via IMAP LIST command [fedora-all]
Summary: CVE-2026-33607 dovecot: Dovecot: Denial of Service via IMAP LIST command [fed...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: dovecot
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Michal Hlavinka
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["3cca6fe6-6c84-4886-a848-f...
Depends On:
Blocks: CVE-2026-33607
TreeView+ depends on / blocked
 
Reported: 2026-09-01 07:24 UTC by Vladimir Vasilev
Modified: 2026-09-01 07:24 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Vladimir Vasilev 2026-09-01 07:24:55 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

An attacker that has valid credentials can use IMAP LIST command to consume CPU. This can cause degradation or denial of service for IMAP. Monitor system for abnormal CPU usage and kill the offending process and lock account. Alternatively install fixed version. No publicly available exploits are known.


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