{"id":"EUVD-2025-203891","enisaUuid":"e8f346be-6f41-3727-a27d-e01d05f1b182","description":"Mattermost versions 10.11.x \u003c\u003d 10.11.6 and Mattermost GitHub plugin versions \u003c\u003d2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.","datePublished":"Dec 17, 2025, 12:11:25 PM","dateUpdated":"Dec 17, 2025, 4:48:08 PM","baseScore":3.0,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N","references":"https://mattermost.com/security-updates\n","aliases":"CVE-2025-13352\nGHSA-jf5h-xfw4-p8gp\n","assigner":"Mattermost","epss":0.18,"enisaIdProduct":[{"id":"4347a54c-dcdf-3d16-b79e-3bad465911ca","product":{"name":"Mattermost","vendor":{"name":"Mattermost"}},"product_version":"10.11.0 ≤10.11.6"}],"enisaIdVendor":[{"id":"4c5c3946-5edf-3297-9c65-e2b304160a76","vendor":{"name":"Mattermost"}}],"enisaIdVulnerability":[{"id":"61e5a51b-541f-3966-aa21-47f664453009","vulnerability":{"id":"GHSA-jf5h-xfw4-p8gp","description":"Mattermost GitHub Plugin Bot Identity Validation Bypass Allows Arbitrary GitHub Reaction Injection","datePublished":"Dec 17, 2025, 3:34:53 PM","dateUpdated":"Dec 17, 2025, 10:49:46 PM","baseScore":0.0,"references":"https://nvd.nist.gov/vuln/detail/CVE-2025-13352\nhttps://github.com/mattermost/mattermost-plugin-github/commit/0deffcfc6bee7eaf01f7c99100e3d12e8d9df68c\nhttps://github.com/mattermost/mattermost/commit/3b05384dd0146c1be3caa620a42e00e46027055d\nhttps://github.com/mattermost/mattermost\nhttps://mattermost.com/security-updates\n","enisa_id":"EUVD-2025-203891\n","aliases":"CVE-2025-13352\nGHSA-jf5h-xfw4-p8gp\n","epss":0.0,"dataProcessed":"Oct 25, 2026, 1:52:34 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"8e1f7446-2228-37af-9965-4a79b127d351","vulnerability":{"id":"CVE-2025-13352","description":"Mattermost versions 10.11.x \u003c\u003d 10.11.6 and Mattermost GitHub plugin versions \u003c\u003d2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.","datePublished":"Dec 17, 2025, 12:11:25 PM","dateUpdated":"Dec 17, 2025, 4:48:08 PM","status":"PUBLISHED","baseScore":3.0,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N","references":"https://mattermost.com/security-updates\n","enisa_id":"EUVD-2025-203891\n","assigner":"Mattermost","epss":0.18,"dataProcessed":"Oct 27, 2026, 7:17:47 AM","vulnerabilityProduct":[{"id":"6bbe2b11-6b8c-34fc-9406-1dc847bf039c","product":{"name":"Mattermost","vendor":{"name":"Mattermost"}},"product_version":"10.11.0 ≤10.11.6"}],"vulnerabilityVendor":[{"id":"2388258c-0f85-31c6-9f59-d760e663b068","vendor":{"name":"Mattermost"}}]}}],"enisaIdAdvisory":[]}