{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42239","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-25T05:37:12.118Z","datePublished":"2026-05-07T18:49:59.180Z","dateUpdated":"2026-05-07T19:39:45.605Z"},"containers":{"cna":{"title":"Budibase auth session cookies are set with httpOnly:false — any XSS can lead to full account takeover","problemTypes":[{"descriptions":[{"cweId":"CWE-1004","lang":"en","description":"CWE-1004: Sensitive Cookie Without 'HttpOnly' Flag","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/Budibase/budibase/security/advisories/GHSA-4f9j-vr4p-642r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Budibase/budibase/security/advisories/GHSA-4f9j-vr4p-642r"},{"name":"https://github.com/Budibase/budibase/releases/tag/3.35.10","tags":["x_refsource_MISC"],"url":"https://github.com/Budibase/budibase/releases/tag/3.35.10"}],"affected":[{"vendor":"Budibase","product":"budibase","versions":[{"version":"< 3.35.10","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-07T18:49:59.180Z"},"descriptions":[{"lang":"en","value":"Budibase is an open-source low-code platform. Prior to version 3.35.10, the budibase:auth cookie containing the JWT session token is set with httpOnly: false at packages/backend-core/src/utils/utils.ts:218. JavaScript can read this cookie via document.cookie. This means every XSS becomes a full account takeover — the attacker steals the JWT and has persistent access to the victim's account. The cookie also lacks secure: true (sent over plaintext HTTP) and sameSite attribute. This issue has been patched in version 3.35.10."}],"source":{"advisory":"GHSA-4f9j-vr4p-642r","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/Budibase/budibase/security/advisories/GHSA-4f9j-vr4p-642r","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-07T19:39:21.519689Z","id":"CVE-2026-42239","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"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":"2026-05-07T19:39:45.605Z"}}]}}