UBUNTU-CVE-2026-61909
Dashboard / Vulnerabilities / UBUNTU-CVE-2026-61909
Summary:
Details: CalDAV/CardDAV multiget bypasses per-href ACL: An authenticated DAV user with some shared access to another user's calendar or address book could read even unshared events or contacts by including the target hrefs in a calendar-multiget or addressbook-multiget REPORT.
References: https://ubuntu.com/security/CVE-2026-61909, https://www.cve.org/CVERecord?id=CVE-2026-61909
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
