Mattermost information leakage vulnerability
🗓️ 15 Oct 2026 16:00:00Reported by China National Vulnerability Database of Information SecurityType 
cnnvd🔗 www.cnnvd.org.cn👁 5 Views
| Reporter | Title | Published | Views | Family All 9 |
|---|---|---|---|---|
 | CVE-2026-19603 | 16 Oct 202608:03 | – | circl |
 | CVE-2026-19603 | 16 Oct 202607:02 | – | cve |
 | CVE-2026-19603 Private channel ID disclosure via user status endpoints | 16 Oct 202607:02 | – | cvelist |
 | EUVD-2026-102742 | 16 Oct 202607:02 | – | euvd |
 | CVE-2026-19603 | 16 Oct 202607:02 | – | mend |
 | CVE-2026-19603 | 16 Oct 202607:17 | – | nvd |
 | PT-2026-115517 | 16 Oct 202600:00 | – | ptsecurity |
 | CVE-2026-19603: Insertion of Sensitive Information Into Sent Data | 16 Oct 202600:00 | – | rapid7 |
 | CVE-2026-19603 Private channel ID disclosure via user status endpoints | 16 Oct 202607:02 | – | vulnrichment |
| Source | Link |
|---|---|
| mattermost | www.mattermost.com/security-updates |
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
19 Oct 2026 08:59Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
EPSS0.00176
SSVC