{"url":"http://public2.vulnerablecode.io/api/packages/451277?format=json","purl":"pkg:npm/scratch-vm@0.1.0-prerelease.1521117812-prerelease.1521117830","type":"npm","namespace":"","name":"scratch-vm","version":"0.1.0-prerelease.1521117812-prerelease.1521117830","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"0.2.0-prerelease.20200714185213","latest_non_vulnerable_version":"0.2.0-prerelease.20200714185213","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/41129?format=json","vulnerability_id":"VCID-yfqk-9fn6-83ew","summary":"Remote Code Execution in scratch-vm\nMIT Lifelong Kindergarten Scratch scratch-vm before `0.2.0-prerelease.20200714185213` loads extension URLs from untrusted project.json files with certain `_` characters, resulting in remote code execution because the URL's content is treated as a script and is executed as a worker. The responsible code is `getExtensionIdForOpcode` in serialization/sb3.js. The use of `_` is incompatible with a protection mechanism in older versions, in which URLs were split and consequently deserialization attacks were prevented. \n\n**NOTE**: the scratch.mit.edu hosted service is not affected because of the lack of worker scripts.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-14000","reference_id":"","reference_type":"","scores":[{"value":"0.06601","scoring_system":"epss","scoring_elements":"0.91317","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-14000"},{"reference_url":"https://github.com/LLK/scratch-vm","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/LLK/scratch-vm"},{"reference_url":"https://github.com/LLK/scratch-vm/pull/2476","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/LLK/scratch-vm/pull/2476"},{"reference_url":"https://github.com/LLK/scratch-vm/pull/2476/commits/90b9da45f4084958535338d1c4d71a22d6136aab","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/LLK/scratch-vm/pull/2476/commits/90b9da45f4084958535338d1c4d71a22d6136aab"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-14000","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-14000"},{"reference_url":"https://scratch.mit.edu/discuss/topic/422904/?page=1#post-4223443","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://scratch.mit.edu/discuss/topic/422904/?page=1#post-4223443"},{"reference_url":"https://github.com/advisories/GHSA-vc9j-fhvv-8vrf","reference_id":"GHSA-vc9j-fhvv-8vrf","reference_type":"","scores":[{"value":"CRITICAL","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-vc9j-fhvv-8vrf"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/74763?format=json","purl":"pkg:npm/scratch-vm@0.2.0-prerelease.20200714185213","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/scratch-vm@0.2.0-prerelease.20200714185213"}],"aliases":["CVE-2020-14000","GHSA-vc9j-fhvv-8vrf"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-yfqk-9fn6-83ew"}],"fixing_vulnerabilities":[],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/scratch-vm@0.1.0-prerelease.1521117812-prerelease.1521117830"}