CVE-2025-2564: Github.com/mattermost/mattermost/server/v8 Mattermost Incorrect Authorization Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-mj2p-v2c2-vh4v
CVSS 4.3
CWE-863
Published
Advisory Summary

CVE-2025-2564 is a MODERATE (CVSS 4.3) mattermost incorrect authorization vulnerability vulnerability (CWE-863: Incorrect Authorization) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost incorrect authorization vulnerability. Remediation is available by upgrading affected packages to version 10.5.2, 10.4.4, 9.11.10, 8.0.0-20250314142426-c049748b8863.

CVE-2025-2564 at a Glance

CVE Identifier CVE-2025-2564
GHSA Identifier GHSA-mj2p-v2c2-vh4v
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-863: Incorrect Authorization
Affected Product Github.com/mattermost/mattermost/server/v8
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 4.3

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2025-2564

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: 10.5.2
Upgrade github.com/mattermost/mattermost/server/v8 to 10.5.2
github.com/mattermost/mattermost/server/v8 fixed: 10.4.4
Upgrade github.com/mattermost/mattermost/server/v8 to 10.4.4
github.com/mattermost/mattermost/server/v8 fixed: 9.11.10
Upgrade github.com/mattermost/mattermost/server/v8 to 9.11.10
github.com/mattermost/mattermost/server/v8 fixed: 8.0.0-20250314142426-c049748b8863
Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20250314142426-c049748b8863
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-2025-2564, 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 10.5.2), 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 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.

CVE-2025-2564 Affected Github.com/mattermost/mattermost/server/v8 Versions

4 component(s)
Fixed Versions:
10.5.210.4.49.11.108.0.0-20250314142426-c049748b8863
Product / Package Ecosystem Affected Versions Fixed Version
github.com/mattermost/mattermost/server/v8
Go
≥ 10.5.0
< 10.5.2
10.5.2
github.com/mattermost/mattermost/server/v8
Go
≥ 10.4.0
< 10.4.4
10.4.4
github.com/mattermost/mattermost/server/v8
Go
≥ 9.11.0
< 9.11.10
9.11.10
github.com/mattermost/mattermost/server/v8
Go
< 8.0.0-20250314142426-c049748b8863
8.0.0-20250314142426-c049748b8863

References

Frequently Asked Questions

What is CVE-2025-2564?
CVE-2025-2564 is a security vulnerability in Github.com/mattermost/mattermost/server/v8 involving Mattermost Incorrect Authorization vulnerability under CWE-863: Incorrect Authorization.
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
Affected versions include releases prior to 10.5.2, 10.4.4, 9.11.10, 8.0.0-20250314142426-c049748b8863 across affected packages: github.com/mattermost/mattermost/server/v8.
What version fixes CVE-2025-2564?
Upgrading to 10.5.2, 10.4.4, 9.11.10, 8.0.0-20250314142426-c049748b8863 (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 10.5.2, 10.4.4, 9.11.10, 8.0.0-20250314142426-c049748b8863. Upgrade your dependency to 10.5.2, 10.4.4, 9.11.10, 8.0.0-20250314142426-c049748b8863 or later.
What is the CVSS score of CVE-2025-2564?
CVE-2025-2564 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2025-2564?
CVE-2025-2564 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-2025-2564?
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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mj2p-v2c2-vh4v",
  "modified" : "2025-04-16T19:44:28Z",
  "published" : "2025-04-16T18:31:53Z",
  "aliases" : [ "CVE-2025-2564" ],
  "summary" : "Mattermost Incorrect Authorization vulnerability",
  "details" : "Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/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" : "10.5.0"
      }, {
        "fixed" : "10.5.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.4.0"
      }, {
        "fixed" : "10.4.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.11.0"
      }, {
        "fixed" : "9.11.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "8.0.0-20250314142426-c049748b8863"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-2564"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mattermost/mattermost"
  }, {
    "type" : "WEB",
    "url" : "https://mattermost.com/security-updates"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-16T19:44:28Z",
    "nvd_published_at" : "2025-04-16T17:15:49Z"
  }
}