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Scripting (XSS) in Eclipse Theia\nIn Eclipse Theia versions up to and including 1.2.0, the Markdown Preview (@theia/preview), can be exploited to execute arbitrary code.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-27224","reference_id":"","reference_type":"","scores":[{"value":"0.009","scoring_system":"epss","scoring_elements":"0.76003","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-27224"},{"reference_url":"https://github.com/eclipse-theia/theia/issues/7954","reference_id":"","reference_type":"","scores":[{"value":"9.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/eclipse-theia/theia/issues/7954"},{"reference_url":"https://github.com/eclipse-theia/theia/pull/7971","reference_id":"","reference_type":"","scores":[{"value":"9.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/eclipse-theia/theia/pull/7971"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27224","reference_id":"","reference_type":"","scores":[{"value":"9.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27224"},{"reference_url":"https://omespino.com/write-up-google-bug-bounty-xss-to-cloud-shell-instance-takeover-rce-as-root-5000-usd","reference_id":"","reference_type":"","scores":[{"value":"9.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://omespino.com/write-up-google-bug-bounty-xss-to-cloud-shell-instance-takeover-rce-as-root-5000-usd"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/474943?format=json","purl":"pkg:npm/%40theia/preview@1.3.0-next.60437227","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-dpn7-bdg2-37hc"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/%2540theia/preview@1.3.0-next.60437227"},{"url":"http://public2.vulnerablecode.io/api/packages/75666?format=json","purl":"pkg:npm/%40theia/preview@1.3.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-dpn7-bdg2-37hc"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/%2540theia/preview@1.3.0"}],"aliases":["CVE-2020-27224","GHSA-gcm9-cc3r-c6vj"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-tvax-2xum-m7gn"}],"fixing_vulnerabilities":[],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/%2540theia/preview@1.2.0-next.84408de8"}