UBUNTU-CVE-2026-61911
Dashboard / Vulnerabilities / UBUNTU-CVE-2026-61911
Summary:
Details: 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.
References: https://ubuntu.com/security/CVE-2026-61911, https://www.cve.org/CVERecord?id=CVE-2026-61911
Affected packages
Package
Name: cyrus-imapd
Purl: pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Fbionic
Affected ranges
Type: ECOSYSTEM
Events:
Introduced- 0
Fixed -None
Affected versions
2.5.10-3build1
2.5.10-3build2
2.5.10-3ubuntu1
2.5.10-3ubuntu1.1
2.5.10-3ubuntu1.1+esm1
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
