CVE-2025-4573Network attack vector

LDAP data disclosure via unvalidated group identifier

Published Jun 11, 2025 · Updated Jun 11, 2025

LDAP filter injection in affected Mattermost Server releases allows remote authenticated users to disclose LDAP data through group linking. The PUT /api/v4/ldap/groups/{remote_id}/link handler fails to validate the group identifier before using it in an LDAP search filter. Exploitation requires PermissionSysconsoleWriteUserManagementGroups and an objectGUID Group ID Attribute, limiting the consequence to LDAP-data confidentiality.

CVSS severity4.1
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

LDAP filter injection in affected Mattermost Server releases allows remote authenticated users to disclose LDAP data through group linking. The PUT /api/v4/ldap/groups/{remote_id}/link handler fails to validate the group identifier before using it in an LDAP search filter. Exploitation requires PermissionSysconsoleWriteUserManagementGroups and an objectGUID Group ID Attribute, limiting the consequence to LDAP-data confidentiality.

The record

CVE
CVE-2025-4573
Published
Jun 11, 2025
Updated
Jun 11, 2025
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-90, T1213
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.5.0 <=10.5.4
  2. Affected versionversion=10.6.0 <=10.6.3
  3. Affected versionversion=10.7.0 <=10.7.1
  4. Affected versionversion=9.11.0 <=9.11.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Mattermost · Mattermostversion=10.5.0 <=10.5.4; version=10.6.0 <=10.6.3; version=10.7.0 <=10.7.1; version=9.11.0 <=9.11.13

Published CVSS scores

4.1Mattermost, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-90Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
T1213Data from Information Repositories

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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