{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-87897","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","state":"PUBLISHED","assignerShortName":"hackerone","dateReserved":"2026-09-09T15:00:00.573Z","datePublished":"2026-10-27T16:15:34.742Z","dateUpdated":"2026-11-04T17:59:02.350Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A SSRF vulnerability found that enables access to internal Chrome Devtools Protocol APIs that can leak the JWT authentication token for another user. A low privileged attacker could continually exploit this vulnerability to leak the JWT authentication token for another user when they start a recording, which then enables the attacker read/write access to the victim's Whiteboard."}],"affected":[{"defaultStatus":"unaffected","vendor":"Nextcloud","product":"whiteboard","versions":[{"version":"1.0.0","status":"affected","lessThan":"1.0.0","versionType":"semver"}]}],"references":[{"url":"https://hackerone.com/reports/3576823"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","baseScore":4.6,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"type":"CWE","lang":"en","cweId":"CWE-918","description":"CWE-918 Server-Side Request Forgery (SSRF)"}]}],"credits":[{"lang":"en","value":"alex-elttam (alex-elttam)","type":"finder"}],"providerMetadata":{"orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","shortName":"hackerone","dateUpdated":"2026-10-27T16:15:34.742Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-04T17:58:52.045220Z","id":"CVE-2026-87897","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-04T17:59:02.350Z"}}]}}