CVE-2026-93636
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
59/100
Published: 2026-10-23
Modified: 2026-10-28
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
Low
I:
None
A:
None
Description
An LDAP filter injection vulnerability in Zimbra Collaboration Suite (ZCS) allows an authenticated user to query otherwise unreturned attributes of calendar resources through SearchCalendarResourcesRequest. Zimbra escapes search values but inserts the supplied attribute names directly into LDAP filter expressions without validation. An attacker can inject additional conditions and use repeated matching queries to recover readable resource attributes such as internal mailbox hostnames and mail transport routes. The search remains restricted to calendar-resource objects and the LDAP service account's access rights. ZCS 10.1.16 and 10.1.21 are affected.
Weakness Classification (1)
Affected Software (4)
| Vendor | Product | Version |
|---|---|---|
| Zimbra | Zimbra Collaboration Suite | 0 |
| Zimbra | Zimbra Collaboration Suite | 0 |
| synacor | zimbra_collaboration_suite | < 10.1.21 |
| synacor | zimbra_collaboration_suite | < 10.1.21 |
References & Advisories (2)
Vendor Advisory
Exploit
Third Party Advisory