CVE-2026-33369Network attack vector

Directory attribute disclosure via LDAP filter injection

Published Mar 20, 2026 · Updated Mar 20, 2026

LDAP injection in Zimbra Collaboration 10.0 and 10.1 allows remote authenticated users to retrieve sensitive directory attributes. The FolderAction operation in the Mailbox SOAP service incorporates unsanitized user-controlled input into an LDAP search filter. A valid user session and crafted SOAP request are required, and the demonstrated consequence is directory-data disclosure without reported modification or service interruption.

CVSS severity4.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

LDAP injection in Zimbra Collaboration 10.0 and 10.1 allows remote authenticated users to retrieve sensitive directory attributes. The FolderAction operation in the Mailbox SOAP service incorporates unsanitized user-controlled input into an LDAP search filter. A valid user session and crafted SOAP request are required, and the demonstrated consequence is directory-data disclosure without reported modification or service interruption.

The record

CVE
CVE-2026-33369
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1087.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1087.002Domain Account Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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