CVE-2025-24866Network attack vector

Authenticated activity-log disclosure via missing permission check

Published Apr 10, 2025 · Updated Apr 10, 2025

Incorrect authorization in Mattermost 9.11.0 through 9.11.8 allows remote authenticated users to read User Activity Logs. The /api/v4/audits endpoint returns audit records to delegated granular administrators without enforcing the separate Compliance Monitoring permission. A delegated granular administration role and API authentication are required; the reported consequence is limited to disclosure of User Activity Logs.

CVSS severity2.7
Low
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Mattermost 9.11.0 through 9.11.8 allows remote authenticated users to read User Activity Logs. The /api/v4/audits endpoint returns audit records to delegated granular administrators without enforcing the separate Compliance Monitoring permission. A delegated granular administration role and API authentication are required; the reported consequence is limited to disclosure of User Activity Logs.

The record

CVE
CVE-2025-24866
Published
Apr 10, 2025
Updated
Apr 10, 2025
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-863, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 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=9.11.0 <=9.11.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mattermost · Mattermostversion=9.11.0 <=9.11.8

Published CVSS scores

2.7Mattermost, Inc.CVSS:3.1/AV:N/AC:L/PR:H/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-863Incorrect Authorization
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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