Low severity3.1NVD Advisory· Published Sep 9, 2026· Updated Sep 16, 2026
CVE-2026-61908
CVE-2026-61908
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-, which could read past the end of the internal blob_headers array during download, exposing adjacent heap memory.
Affected products
3- Range: <3.12.4
Patches
Vulnerability mechanics
References
4- cyrusimap.orgnvdProduct
- www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.htmlnvdRelease Notes
- www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.htmlnvdRelease Notes
- www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.htmlnvdRelease Notes
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