{"schema_version":"1.9.0","id":"CVE-2025-53910","published":"2025-08-11T18:57:03.212Z","modified":"2026-08-12T03:51:40.653838309Z","aliases":["GHSA-v6c8-g53h-mc2h","GO-2025-3869"],"related":["openSUSE-SU-2025:15469-1","openSUSE-SU-2026:21483-1"],"summary":"Unauthorized Channel Subscription Edit in Mattermost Confluence Plugin","details":"Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to create a channel subscription without proper access to the channel via API call to the edit channel subscription endpoint.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost-plugin-confluence","events":[{"introduced":"0"},{"fixed":"eccd0fdb6730a5a2e5a8e3f9636b27122f024e47"}],"database_specific":{"cpe":"cpe:2.3:a:mattermost:confluence:*:*:*:*:*:mattermost:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.5.0"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["v1.5.0-rc2","v1.5.0-rc1","v1.4.0-rc1","v1.3.0","v1.2.0","v1.1.0","v1.1.0-rc1","v1.0.0","v0.1.0-rc2","v0.1.0-rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53910.json"}}],"references":[{"type":"WEB","url":"https://github.com/mattermost/mattermost-plugin-confluence/"},{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53910.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53910"}],"database_specific":{"cna_assigner":"Mattermost","cwe_ids":["CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53910.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N"}]}