CVEvulnerability

CVE-2026-61909

4.3 MEDIUM Published 2026-09-09 Modified 2026-09-16 Official page ↗
Status
Analyzed
Published
2026-09-09
Last modified
2026-09-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.5 LOW — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-420

Description

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.

Affected configurations

• cyrus imap (< 3.8.8) • cyrus imap (>= 3.9.0 < 3.10.4) • cyrus imap (>= 3.11.0 < 3.12.4)

Related

Weakness · CWE (1)

  • CWE-420 Unprotected Alternate Channel weakness

References