CVE-2026-61908
3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| cyrusimap | Cyrus IMAP | 0 < 3.8.8 | affected |
| cyrusimap | Cyrus IMAP | 3.9.0 < 3.10.4 | affected |
| cyrusimap | Cyrus IMAP | 3.11.0 < 3.12.4 | affected |
Weaknesses
- CWE-125: CWE-125 Out-of-bounds Read
References
- https://cyrusimap.org
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html
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