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CVE PROGRAM SOURCE RECORD3.1 Low

CVE-2026-61908

An issue was discovered in Cyrus IMAP before 3.12.4. A JMAP email-header blob ID can reference an out-of-bounds index. An authenticated user could attempt to download a crafted JMA

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Status
Published
Published
Updated
Assigning organization
mitre

Description

An issue was discovered in Cyrus IMAP before 3.12.4. A JMAP email-header blob ID can reference an out-of-bounds index. An authenticated user could attempt to download a crafted JMAP blob ID of the form H<emailid>-<index>, which could read past the end of the internal blob_headers array during download, exposing adjacent heap memory.

Affected products

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

cyrusimap Cyrus IMAP

Default version status: unaffected

  • 0 to < 3.8.8affected
  • 3.9.0 to < 3.10.4affected
  • 3.11.0 to < 3.12.4affected

References