{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/mattermost/mattermost-server/v6","cve_ids":["CVE-2026-2457"],"ecosystem":"Go","epss":0.00109,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-ph22-fw5m-w2q9","id":"tcs_01M5KGFN7QKPR642J61EJCF5MS","modified_at":"2026-03-23T18:45:15.192153Z","published_at":"2026-03-23T18:14:47Z","references":["https://osv.dev/vulnerability/GO-2026-4732","https://github.com/advisories/GHSA-ph22-fw5m-w2q9","https://nvd.nist.gov/vuln/detail/CVE-2026-2457","https://github.com/mattermost/mattermost/commit/9efe617be8b8f1d036e12721e8e73b69a543ed34","https://mattermost.com/security-updates"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-4732#Go/github.com/mattermost/mattermost-server/v6","url":"https://osv.dev/vulnerability/GO-2026-4732"}],"summary":"Mattermost allows attackers to spoof permalink embeds in github.com/mattermost/mattermost-server"}