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x/vulndb: potential Go vuln in github.com/mattermost/mattermost/server/v8: GHSA-4fwj-8595-wp25 #3818

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x/vulndb: potential Go vuln in github.com/mattermost/mattermost/server/v8: GHSA-4fwj-8595-wp25#3818
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Description

@GoVulnBot
GoVulnBot
opened on Jul 21, 2025

Advisory GHSA-4fwj-8595-wp25 references a vulnerability in the following Go modules:

Module
github.com/mattermost/mattermost-server
github.com/mattermost/mattermost-server/v5
github.com/mattermost/mattermost-server/v6
github.com/mattermost/mattermost/server/v8

Description:
Mattermost versions 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to negotiate a new token when accepting the invite which allows a user that intercepts both invite and password to send synchronization payloads to the server that originally created the invite via the REST API.

References:

Cross references:

See doc/quickstart.md for instructions on how to triage this report.

id: GO-ID-PENDING
modules:
    - module: github.com/mattermost/mattermost-server
      versions:
        - introduced: 9.11.0+incompatible
        - fixed: 9.11.17+incompatible
        - introduced: 10.5.0+incompatible
        - fixed: 10.5.8+incompatible
      vulnerable_at: 10.5.8-rc1+incompatible
    - module: github.com/mattermost/mattermost-server/v5
      vulnerable_at: 5.39.3
    - module: github.com/mattermost/mattermost-server/v6
      vulnerable_at: 6.7.2
    - module: github.com/mattermost/mattermost/server/v8
      versions:
        - fixed: 8.0.0-20250612074655-8f8612c63783
summary: Mattermost has Insufficiently Protected Credentials in github.com/mattermost/mattermost-server
cves:
    - CVE-2025-6227
ghsas:
    - GHSA-4fwj-8595-wp25
references:
    - advisory: https://github.com/advisories/GHSA-4fwj-8595-wp25
    - advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-6227
    - fix: https://github.com/mattermost/mattermost/commit/fbf105f6ef8f6cd5a89f859f09a2d1216cd81c05
    - web: https://mattermost.com/security-updates
notes:
    - fix: 'github.com/mattermost/mattermost/server/v8: could not add vulnerable_at: could not find tagged version between introduced and fixed'
source:
    id: GHSA-4fwj-8595-wp25
    created: 2025-07-21T19:04:01.074093345Z
review_status: UNREVIEWED

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