Riskcovery

CVE-2026-61911

State
Published
Severity
4.3 Medium
Published
Sep 9, 2026
Updated
Sep 10, 2026
Reserved
Jul 13, 2026

Read the record on cve.org

Description

An issue was discovered in Cyrus IMAP before 3.12.4. There is a Sieve mailbox existence oracle. An authenticated user could install a Sieve script that probed whether another user's private mailbox existed, or read the value of shared mailbox annotations, by observing which fileinto branch fired during LMTP delivery.

Scores

CVSSScoreVectorSource
3.14.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nmitre

Weaknesses

  • CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere

Affected Products

ProductVersions
Cyrus IMAPcyrusimap
  • before 3.8.8Affected
  • 3.9.0 to before 3.10.4Affected
  • 3.11.0 to before 3.12.4Affected

References

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