Improper input validation in Synacor Zimbra Collaboration Suite
CVE-2026-33369
Zimbra Collaboration (ZCS) 10.0 and 10.1 contains an LDAP injection vulnerability in the Mailbox SOAP service within a FolderAction operation. The application fails to properly sanitize user-supplied input before incorporating it into an LDAP search filter. An authenticated attacker can exploit this issue by sending a crafted SOAP request that manipulates the LDAP query, allowing retrieval of sensitive directory attributes.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.002 (13.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Synacor Zimbra_collaboration_suite
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org (Release Notes, Vendor Advisory)
- cve@mitre.org (Product)
- cve@mitre.org (Release Notes)
Frequently asked questions
- What is CVE-2026-33369?
- CVE-2026-33369 is a medium-severity vulnerability in Synacor Zimbra Collaboration Suite, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-03-20.
- How severe is CVE-2026-33369?
- Medium severity. CVSS v3 base score is 4.3 out of 10.