{"id":"CVE-2026-87897","state":"PUBLISHED","title":"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 coul","description":"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.","publishedAt":"2026-10-27T16:15:34.742Z","updatedAt":"2026-10-27T16:15:34.742Z","severity":{"score":4.6,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","source":"hackerone"},"assigner":"hackerone","products":["Nextcloud whiteboard"],"affected":[{"vendor":"Nextcloud","product":"whiteboard","defaultStatus":"unaffected","versions":[{"version":"1.0.0","status":"affected","lessThan":"1.0.0","versionType":"semver"}]}],"references":["https://hackerone.com/reports/3576823"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/87xxx/CVE-2026-87897.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-87897","state":"PUBLISHED","datePublished":"2026-10-27T16:15:34.742Z","dateUpdated":"2026-10-27T16:15:34.742Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2026-09-09T15:00:00.573Z"},"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":[{"vendor":"Nextcloud","product":"whiteboard","defaultStatus":"unaffected","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":[{"cweId":"CWE-918","type":"CWE","lang":"en","description":"CWE-918 Server-Side Request Forgery (SSRF)"}]}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2026-10-27T16:15:34.742Z"},"credits":[{"lang":"en","value":"alex-elttam (alex-elttam)","type":"finder"}]}}}}