Lucene search
+L

CVE-2026-18795 Missing server side validation allowed user to quarantine a DM and GM post

🗓️ 16 Oct 2026 07:01:22Reported by MattermostType 
cvelist
 cvelist
🔗 www.cve.org👁 12 Views

Authenticated user can quarantine DM or GM posts in Mattermost via direct API call.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-18795
16 Oct 202608:01
–circl
cve
CVE
CVE-2026-18795
16 Oct 202607:01
–cve
euvd
EUVD
EUVD-2026-102813
16 Oct 202607:01
–euvd
nvd
NVD
CVE-2026-18795
16 Oct 202607:17
–nvd
ptsecurity
Positive Technologies
PT-2026-115511
16 Oct 202600:00
–ptsecurity
vulnrichment
Vulnrichment
CVE-2026-18795 Missing server side validation allowed user to quarantine a DM and GM post
16 Oct 202607:01
–vulnrichment
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.10.0",
        "status": "affected",
        "version": "11.10.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.7.9",
        "status": "affected",
        "version": "11.7.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.9.1",
        "status": "affected",
        "version": "11.9.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.8.5",
        "status": "affected",
        "version": "11.8.0",
        "versionType": "semver"
      },
      {
        "version": "11.11.0",
        "status": "unaffected"
      },
      {
        "version": "11.10.1",
        "status": "unaffected"
      },
      {
        "version": "11.7.10",
        "status": "unaffected"
      },
      {
        "version": "11.9.2",
        "status": "unaffected"
      },
      {
        "version": "11.8.6",
        "status": "unaffected"
      }
    ]
  }
]

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

16 Oct 2026 07:01Current
CVSS 3.16.4
EPSS0.0015
SSVC
12