{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-25586","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-02-03T01:02:46.715Z","datePublished":"2026-02-06T19:54:38.446Z","dateUpdated":"2026-02-06T20:17:19.095Z"},"containers":{"cna":{"title":"SandboxJS has a Sandbox Escape via Prototype Whitelist Bypass and Host Prototype Pollution","problemTypes":[{"descriptions":[{"cweId":"CWE-74","lang":"en","description":"CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-jjpw-65fv-8g48","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-jjpw-65fv-8g48"},{"name":"https://github.com/nyariv/SandboxJS/commit/67cb186c41c78c51464f70405504e8ef0a6e43c3","tags":["x_refsource_MISC"],"url":"https://github.com/nyariv/SandboxJS/commit/67cb186c41c78c51464f70405504e8ef0a6e43c3"}],"affected":[{"vendor":"nyariv","product":"SandboxJS","versions":[{"version":"< 0.8.29","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-02-06T19:54:38.446Z"},"descriptions":[{"lang":"en","value":"SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty on a sandbox object, which disables prototype whitelist enforcement in the property-access path. This permits direct access to __proto__ and other blocked prototype properties, enabling host Object.prototype pollution and persistent cross-sandbox impact. This vulnerability is fixed in 0.8.29."}],"source":{"advisory":"GHSA-jjpw-65fv-8g48","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-jjpw-65fv-8g48","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-06T20:17:14.791538Z","id":"CVE-2026-25586","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-06T20:17:19.095Z"}}]}}