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Mattermost fails to to verify the token used during code exchange
| Reporter | Title | Published | Views | Family All 31 |
|---|---|---|---|---|
 | CVE-2025-12421 | 27 Nov 202519:23 | – | circl |
 | Mattermost 安全漏洞 | 27 Nov 202500:00 | – | cnnvd |
 | CVE-2025-12421 | 27 Nov 202517:47 | – | cve |
 | CVE-2025-12421 Account Takeover via Code Exchange Endpoint | 27 Nov 202517:47 | – | cvelist |
 | EUVD-2025-199833 | 27 Nov 202518:30 | – | euvd |
 | Mattermost Server 10.5.x <= 10.5.12 / 10.11.x <= 10.11.4 / 10.12.x <= 10.12.1 / 11.0.x <= 11.0.2 Multiple Vulnerabilities (CVE-2025-12421, MMSA-2025-00526, CVE-2025-12756) | 10 Dec 202500:00 | – | nessus |
 | Vulnerabilities fixed in Mattermost | 28 Nov 202509:53 | – | ncsc |
 | CVE-2025-12421 | 27 Nov 202518:15 | – | nvd |
 | GHSA-MP6X-97XJ-9X62 Mattermost fails to to verify the token used during code exchange | 27 Nov 202518:30 | – | osv |
| GO-2025-4170 Mattermost fails to to verify the token used during code exchange in github.com/mattermost/mattermost-server | 15 Dec 202520:33 | – | osv |
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01 Dec 2025 23:57Current
7.3High risk
Vulners AI Score7.3
CVSS 3.19.9
EPSS0.00086
SSVC