{"id":"CVE-2026-87897","title":"A SSRF vulnerability found that enables access to internal Chrome Devtools Protocol APIs that can leak the JWT authentication token for another user","summary":"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 …","severity":"medium","cvss":4.6,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-918"],"vendor":"Nextcloud","product":"whiteboard","affected":["whiteboard >= 1.0.0 < 1.0.0"],"published":"2026-10-27","updated":"2026-10-27","sourceUpdated":"2026-10-27T16:15:34.742Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-87897","references":[{"url":"https://hackerone.com/reports/3576823"}],"tags":["cve.org"],"ingestedAt":"2026-10-27T16:32:34.404Z","slug":"CVE-2026-87897","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `whiteboard >= 1.0.0 < 1.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":25,"depthScoreParts":{"impact":25.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}