Lucene search
K

Mattermost allows authenticated users to gain access to private repositories

🗓️ 26 May 2026 13:30:19Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

Mattermost fails to validate OAuth scope, enabling users to access private repos via URL scope manipulation.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-28735
22 May 202616:26
attackerkb
CNNVD
Mattermost 安全漏洞
22 May 202600:00
cnnvd
CVE
CVE-2026-28735
22 May 202616:26
cve
Cvelist
CVE-2026-28735 GitHub OAuth Scope Validation
22 May 202616:26
cvelist
EUVD
EUVD-2026-31465
22 May 202616:26
euvd
NVD
CVE-2026-28735
22 May 202617:16
nvd
OSV
GHSA-R5VF-GRCX-5VQP Mattermost allows authenticated users to gain access to private repositories
26 May 202613:30
osv
Positive Technologies
PT-2026-42799
22 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-28735
5 Jun 202619:29
redhatcve
Snyk
Incorrect Authorization
26 May 202613:30
snyk
Rows per page
Vulners
Node
mattermostmattermost-plugin-githubRange<1.0.1-0.20260318132218-6e6b740c4852go
OR
mattermostmattermost-serverRange10.11.010.11.15go
OR
mattermostmattermost-serverRange11.4.011.4.5go
OR
mattermostmattermost-serverRange11.5.011.5.4go
OR

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

29 Jun 2026 23:09Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.4
EPSS0.00138
SSVC
4