{"cve":"CVE-2025-53857","nvd":{"published":"2025-08-11T19:15:29.603","modified":"2026-06-17T09:39:02.180","status":"Analyzed","description":"Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to get channel subscription details without proper access to the channel via API call to the GET autocomplete/GetChannelSubscriptions endpoint.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":3.7},"cwes":["CWE-862"],"references":["https://mattermost.com/security-updates"],"products":["mattermost:confluence"],"source":"nvd","synced_at":"2026-10-19T22:06:45.861874017+00:00"},"epss":{"cve":"CVE-2025-53857","score":0.00227,"percentile":0.13492,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-42m6-5vm7-fjv2","url":"https://osv.dev/vulnerability/GHSA-42m6-5vm7-fjv2","summary":"Mattermost Confluence Plugin has Missing Authorization vulnerability","modified":"2025-08-18T13:57:15.568728Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-confluence","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-confluence","ranges":["<1.5.0"],"fixed":["1.5.0"]}]},{"id":"GO-2025-3864","url":"https://osv.dev/vulnerability/GO-2025-3864","summary":"Mattermost Confluence Plugin has Missing Authorization vulnerability in github.com/mattermost/mattermost-plugin-confluence","modified":"2026-03-03T04:56:48.854356Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-confluence","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-confluence","ranges":["<1.5.0"],"fixed":["1.5.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}