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Solution
No solution given by the vendor.
Workaround
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Fri, 28 Aug 2026 15:30:00 +0000
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| Metrics |
ssvc
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Fri, 28 Aug 2026 14:00:00 +0000
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| Title | IMAP Compression Reuse Allows Recipient‑Dependent Information Disclosure |
Fri, 28 Aug 2026 11:30:00 +0000
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| Description | When IMAP compression is enabled, the same compression state is reused across responses in a session, so response sizes depend on both attacker-supplied mail and other mail in the same mailbox. An attacker that can send mail to a user and can also observe the sizes of that user's IMAP traffic can confirm whether the body of a small message matches a guessed text. Recovery of arbitrary unknown content was not demonstrated, but the attack can disclose whether a secret-like message body matches a candidate. Disable IMAP compression. Update to non-vulnerable version. No publicly available exploits are known. | |
| Weaknesses | CWE-200 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: OX
Published:
Updated: 2026-08-28T14:57:07.686Z
Reserved: 2026-04-10T07:11:39.060Z
Link: CVE-2026-40203
Updated: 2026-08-28T14:57:03.836Z
Status : Received
Published: 2026-08-28T12:16:28.897
Modified: 2026-08-28T16:17:57.233
Link: CVE-2026-40203
No data.
OpenCVE Enrichment
Updated: 2026-08-28T13:45:17Z