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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 09 Sep 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| First Time appeared |
Cyrusimap
Cyrusimap cyrus Imap |
|
| Weaknesses | CWE-125 | |
| CPEs | cpe:2.3:a:cyrusimap:cyrus_imap:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Cyrusimap
Cyrusimap cyrus Imap |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-09-09T19:44:57.533Z
Reserved: 2026-07-13T00:00:00.000Z
Link: CVE-2026-61908
No data.
Status : Awaiting Analysis
Published: 2026-09-09T20:18:36.383
Modified: 2026-09-09T20:22:32.663
Link: CVE-2026-61908
No data.
OpenCVE Enrichment
No data.
Weaknesses