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CVE-2026-61911

cyrusimap / Cyrus IMAP PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
cyrusimap / Cyrus IMAPaffected 0 before 3.8.8; affected 3.9.0 before 3.10.4; affected 3.11.0 before 3.12.4

CWE

CWE-497

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.