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x/vulndb: potential Go vuln in github.com/mattermost/mattermost-server: GHSA-876j-jfqf-m7j7 #4197

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x/vulndb: potential Go vuln in github.com/mattermost/mattermost-server: GHSA-876j-jfqf-m7j7#4197
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Description

@GoVulnBot
GoVulnBot
opened on Dec 5, 2025

Advisory GHSA-876j-jfqf-m7j7 references a vulnerability in the following Go modules:

Module
github.com/mattermost/mattermost-server

Description:
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by using a registered OAuth application with personal access tokens.

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:
        - fixed: 4.1.2+incompatible
        - introduced: 4.2.0-rc1+incompatible
        - fixed: 4.2.1+incompatible
        - introduced: 4.3.0-rc1+incompatible
        - fixed: 4.3.0+incompatible
      vulnerable_at: 4.3.0-rc4+incompatible
summary: Mattermost Server exposes OAuth personal access tokens to attackers in github.com/mattermost/mattermost-server
cves:
    - CVE-2017-18884
ghsas:
    - GHSA-876j-jfqf-m7j7
references:
    - advisory: https://github.com/advisories/GHSA-876j-jfqf-m7j7
    - advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-18884
    - web: https://mattermost.com/security-updates
source:
    id: GHSA-876j-jfqf-m7j7
    created: 2025-12-05T20:01:22.748735139Z
review_status: UNREVIEWED

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