| Package | Affected versions | Patched versions |
|---|---|---|
| imap | ≥ 3.11.0, < 3.12.4≥ 3.9.0, < 3.10.4< 3.8.8 | 3.12.43.10.43.8.8 |
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.
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