{"id":"CVE-2026-42280","sourceIdentifier":"security-advisories@github.com","published":"2026-05-27T15:16:27.753","lastModified":"2026-06-17T10:47:37.527","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Auth0.js is a client-side JavaScript library for Auth0. From 8.11.0 to 9.32.0, under specific preconditions, the Auth0.js SDK may improperly return user profile information using a valid access token when a specifically crafted invalid ID token is provided. This vulnerability is fixed in 10.0.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"auth0","product":"auth0.js","versions":[{"version":">= 8.11.0 , <= 9.32.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":4.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-28T15:36:47.306227Z","id":"CVE-2026-42280","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-863"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:auth0:auth0.js:*:*:*:*:*:node.js:*:*","versionStartIncluding":"8.11.0","versionEndExcluding":"10.0.0","matchCriteriaId":"F16E19EA-BB12-42DA-96ED-602A8FC930C0"}]}]}],"references":[{"url":"https://github.com/auth0/auth0.js/security/advisories/GHSA-8qjv-jj2q-x832","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}