CVE-2026-93635: medium-severity vulnerability in Zimbra Collaboration Suite
Zimbra Collaboration Suite LDAP Filter Injection via Unescaped computeDn() Template Substitution
Published
10Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3
exploitation probability
—
observed exploitation
nono source reports it
LDAP filter injection in Zimbra Collaboration Suite 10.1.0 through 10.1.21 allows unauthenticated attackers to alter external LDAP search filters. On domains using search-filter authentication and lazy provisioning, this creates a password oracle for external directory users. Authenticated S/MIME lookups can also return certificates and identity data for unintended directory entries.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
Zimbra · Zimbra Collaboration SuiteRelated CVEs — Zimbra Collaboration Suite
In the same product, most dangerous first.
CVE-2026-50055MEDIUMZimbra Collaboration Suite Sieve Notify Filter Action Bypasses Mail Forwarding Restriction via Variable ExpansionEPSS 0.3%CVE-2026-10631MEDIUMZimbra Collaboration Suite EWS Extension Authorization Bypass via Crafted Composite Folder/Item IdentifierEPSS 0.2%CVE-2026-50054HIGHZimbra Collaboration Suite GrantRightsRequest SOAP Handler Allows Self-Granting of Undocumented loginAs Mailbox Delegation RightEPSS 0.2%CVE-2026-93637LOWZimbra Collaboration Suite GraphQL Batched Authentication Bypasses Pre-Auth Rate LimitingEPSS —