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Mattermost Server exposes OAuth personal access tokens to attackers

šŸ—“ļøĀ 24 May 2022Ā 17:21:04Reported byĀ GitHub Advisory DatabaseTypeĀ 
github
Ā github
šŸ”—Ā github.comšŸ‘Ā 3Ā Views

Mattermost Server versions 4.3.0, 4.2.1, and 4.1.2 expose open authorization tokens to attackers.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2017-18884
19 Jun 202022:55
–circl
CNVD
Unspecified Vulnerability in Mattermost Server (CNVD-2020-48234)
22 Jun 202000:00
–cnvd
CVE
CVE-2017-18884
19 Jun 202018:08
–cve
Cvelist
CVE-2017-18884
19 Jun 202018:08
–cvelist
EUVD
EUVD-2017-9974
7 Oct 202500:30
–euvd
NVD
CVE-2017-18884
19 Jun 202019:15
–nvd
OSV
GHSA-876J-JFQF-M7J7 Mattermost Server exposes OAuth personal access tokens to attackers
24 May 202217:21
–osv
OSV
GO-2025-4197 Mattermost Server exposes OAuth personal access tokens to attackers in github.com/mattermost/mattermost-server
8 Dec 202521:31
–osv
OSV
SUSE-SU-2025:4395-1 Security update for govulncheck-vulndb
15 Dec 202511:15
–osv
Prion
Code injection
19 Jun 202019:15
–prion
Rows per page
Vulners
Node
mattermostmattermost-serverRange4.3.0-rc1–4.3.0go
OR
mattermostmattermost-serverRange4.2.0-rc1–4.2.1go
OR

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05 Dec 2025 19:38Current
7.3High risk
Vulners AI Score7.3
CVSS 25.5
CVSS 3.18.1
EPSS0.00151
3