CVE-2025-24866: Github.com/mattermost/mattermost/server/v8 Remote Code Execution Vulnerability

LOW
Advisory Identifier: GHSA-xfq9-hh5x-xfq9
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CVSS 2.7
CWE-863
Published
Advisory Summary

CVE-2025-24866 is a LOW (CVSS 2.7) remote code execution vulnerability (CWE-863: Incorrect Authorization) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost fails to enforce proper access controls on `/api/v4/audits` endpoint. Remediation is available by upgrading affected packages to version 9.11.9, 8.0.0-20250204211032-f52e08754c49.

CVE-2025-24866 at a Glance

CVE Identifier CVE-2025-24866
GHSA Identifier GHSA-xfq9-hh5x-xfq9
Severity LOW
CVSS v3.1 Base Score 2.7
CWE Classification CWE-863: Incorrect Authorization
Affected Product Github.com/mattermost/mattermost/server/v8
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 2.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2025-24866

To remediate this vulnerability, upgrade all affected Github.com/mattermost/mattermost/server/v8 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/mattermost/mattermost/server/v8 fixed: 9.11.9 
Upgrade github.com/mattermost/mattermost/server/v8 to 9.11.9
github.com/mattermost/mattermost/server/v8 fixed: 8.0.0-20250204211032-f52e08754c49 
Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20250204211032-f52e08754c49
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/mattermost/mattermost/server/v8

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-24866, inspect your project dependencies for Github.com/mattermost/mattermost/server/v8:

inspect dependencies for github.com/mattermost/mattermost/server/v8

Analyze the terminal output to locate any version of Github.com/mattermost/mattermost/server/v8 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.11.9), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Github.com/mattermost/mattermost/server/v8, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Mattermost versions 9.11.x <= 9.11.8  fail to enforce proper access controls on the /api/v4/audits endpoint, allowing users with delegated granular administration roles who lack access to Compliance Monitoring to retrieve User Activity Logs.

CVE-2025-24866 Affected Github.com/mattermost/mattermost/server/v8 Versions

2 component(s)
Fixed Versions:
9.11.98.0.0-20250204211032-f52e08754c49
Product / Package Ecosystem Affected Versions Fixed Version
github.com/mattermost/mattermost/server/v8
golang/github.com/mattermost/mattermost/server/v8
Go
≥ 9.11.0
< 9.11.9
9.11.9
github.com/mattermost/mattermost/server/v8
golang/github.com/mattermost/mattermost/server/v8
Go
< 8.0.0-20250204211032-f52e08754c49
8.0.0-20250204211032-f52e08754c49

References

NVD — CVE-2025-24866 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-24866
Github.com/mattermost/mattermost/server/v8 Source Repository REPOSITORY
https://github.com/mattermost/mattermost
Github.com/mattermost/mattermost/server/v8 Security Information SECURITY
https://mattermost.com/security-updates
pkg.go.dev/vuln/go-2025-3604 WEB
https://pkg.go.dev/vuln/GO-2025-3604

Frequently Asked Questions

What is CVE-2025-24866?
CVE-2025-24866 is a security vulnerability in Github.com/mattermost/mattermost/server/v8 involving Mattermost Fails to Enforce Proper Access Controls on `/api/v4/audits` Endpoint under CWE-863: Incorrect Authorization.
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
Affected versions include releases prior to 9.11.9, 8.0.0-20250204211032-f52e08754c49 across affected packages: github.com/mattermost/mattermost/server/v8.
What version fixes CVE-2025-24866?
Upgrading to 9.11.9, 8.0.0-20250204211032-f52e08754c49 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/mattermost/mattermost/server/v8 affected?
Yes, github.com/mattermost/mattermost/server/v8 is affected in releases prior to 9.11.9, 8.0.0-20250204211032-f52e08754c49. Upgrade your dependency to 9.11.9, 8.0.0-20250204211032-f52e08754c49 or later.
What is the CVSS score of CVE-2025-24866?
CVE-2025-24866 has a CVSS v3.1 base score of 2.7 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2025-24866?
CVE-2025-24866 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Go dependencies for CVE-2025-24866?
Run the dependency tree command: 'inspect dependencies for github.com/mattermost/mattermost/server/v8'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xfq9-hh5x-xfq9",
  "modified" : "2025-04-23T15:06:10Z",
  "published" : "2025-04-10T18:32:03Z",
  "aliases" : [ "CVE-2025-24866" ],
  "summary" : "Mattermost Fails to Enforce Proper Access Controls on `/api/v4/audits` Endpoint",
  "details" : "Mattermost versions 9.11.x <= 9.11.8  fail to enforce proper access controls on the /api/v4/audits endpoint, allowing users with delegated granular administration roles who lack access to Compliance Monitoring to retrieve User Activity Logs.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.11.0"
      }, {
        "fixed" : "9.11.9"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "8.0.0-20250204211032-f52e08754c49"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-24866"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mattermost/mattermost"
  }, {
    "type" : "WEB",
    "url" : "https://mattermost.com/security-updates"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2025-3604"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-11T14:09:51Z",
    "nvd_published_at" : "2025-04-10T16:15:27Z"
  }
}