{"action":"Upgrade github.com/dexidp/dex to 2.27.0 or later.","affected":[{"fixed":"2.27.0","introduced":"0"}],"component":"github.com/dexidp/dex","cve_ids":["CVE-2020-26290","CVE-2020-27847"],"ecosystem":"Go","epss":0.00989,"exploited":false,"fixed_versions":["2.27.0"],"ghsa_id":"GHSA-m9hp-7r99-94h5","id":"tcs_01M5KFFMQ16KER0S196DB1H916","modified_at":"2026-09-10T03:49:10.271017587Z","published_at":"2021-12-20T17:53:53Z","references":["https://osv.dev/vulnerability/GHSA-m9hp-7r99-94h5","https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5","https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7","https://nvd.nist.gov/vuln/detail/CVE-2020-26290","https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8","https://github.com/russellhaering/goxmldsig/commit/f6188febf0c29d7ffe26a0436212b19cb9615e64","https://github.com/dexidp/dex/releases/tag/v2.27.0","https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md","https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md","https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md","https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities","https://pkg.go.dev/vuln/GO-2020-0050"],"severity":{"label":"critical","score":9.3},"sources":[{"source":"osv","source_id":"GHSA-m9hp-7r99-94h5","url":"https://osv.dev/vulnerability/GHSA-m9hp-7r99-94h5"}],"summary":"Critical security issues in XML encoding in github.com/dexidp/dex"}