{"cve":"CVE-2025-41436","nvd":{"published":"2025-11-14T08:15:45.310","modified":"2026-10-19T13:10:00.110","status":"Analyzed","description":"Mattermost versions <11.0 fail to properly enforce the \"Allow users to view archived channels\" setting which allows regular users to access archived channel content and files via the \"Open in Channel\" functionality from followed threads","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-863"],"references":["https://mattermost.com/security-updates"],"products":["mattermost:mattermost_server"],"source":"nvd","synced_at":"2026-10-19T22:16:02.354564667+00:00"},"epss":{"cve":"CVE-2025-41436","score":0.00181,"percentile":0.07631,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-x3hx-ch7p-8xgg","url":"https://osv.dev/vulnerability/GHSA-x3hx-ch7p-8xgg","summary":"Mattermost allows regular users to access archived channel content and files","modified":"2025-11-18T16:14:00.219651Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":["<11.0.0-alpha.1"],"fixed":["11.0.0-alpha.1"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":["<8.0.0-20250815165020-c8d66301415d"],"fixed":["8.0.0-20250815165020-c8d66301415d"]}]},{"id":"GO-2025-4131","url":"https://osv.dev/vulnerability/GO-2025-4131","summary":"Mattermost allows regular users to access archived channel content and files in github.com/mattermost/mattermost-server","modified":"2026-03-03T04:57:40.099683Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":["<11.0.0-alpha.1+incompatible"],"fixed":["11.0.0-alpha.1+incompatible"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v5","purl":"pkg:golang/github.com/mattermost/mattermost-server/v5","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","purl":"pkg:golang/github.com/mattermost/mattermost-server/v6","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":["<8.0.0-20250815165020-c8d66301415d"],"fixed":["8.0.0-20250815165020-c8d66301415d"]}]}],"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."]}