CVE-2026-61909
An issue was discovered in Cyrus IMAP before 3.12.4. CalDAV/CardDAV multiget bypasses a per-href ACL. An authenticated DAV user with some shared access to another user's calenda…
Published: 2026-09-09 · CVSS: 3.5 · CVSS 3.1
An issue was discovered in Cyrus IMAP before 3.12.4. CalDAV/CardDAV multiget bypasses a 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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7