CVE-2026-27769 Connected Workspaces: Malicious remote server can manipulate arbitrary user's status
| Reporter | Title | Published | Views | Family All 20 |
|---|---|---|---|---|
 | CVE-2026-27769 | 15 Apr 202610:11 | – | attackerkb |
 | Mattermost Authentication Bypass | 20 Apr 202600:00 | – | bdu_fstec |
 | CVE-2026-27769 | 15 Apr 202612:30 | – | circl |
 | Mattermost security vulnerabilities | 15 Apr 202600:00 | – | cnnvd |
 | CVE-2026-27769 | 15 Apr 202610:11 | – | cve |
 | EUVD-2026-22873 | 17 Apr 202615:31 | – | euvd |
 | Mattermost doesn't validate whether users were correctly owned by the correct Connected Workspace | 17 Apr 202615:31 | – | github |
 | Mattermost Server 10.11.x < 10.11.13 Improper Validation (MMSA-2026-00603) | 24 Apr 202600:00 | – | nessus |
 | CVE-2026-27769 | 15 Apr 202610:11 | – | mend |
 | CVE-2026-27769 | 15 Apr 202611:16 | – | nvd |
10
[
{
"defaultStatus": "unaffected",
"product": "Mattermost",
"vendor": "Mattermost",
"versions": [
{
"lessThanOrEqual": "10.11.12",
"status": "affected",
"version": "10.11.0",
"versionType": "semver"
},
{
"version": "11.5.0",
"status": "unaffected"
},
{
"version": "10.11.13",
"status": "unaffected"
}
]
}
]| Source | Link |
|---|---|
| mattermost | www.mattermost.com/security-updates |
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15 Apr 2026 10:11Current
CVSS 3.12.7
EPSS0.00167
SSVC