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2 vulnerabilities found for whiteboard by Nextcloud
CVE-2026-87897 (GCVE-0-2026-87897)
Vulnerability from nvd – Published: 2026-10-27 16:15 – Updated: 2026-11-04 17:59
VLAI
EPSS
VEX
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 authentication token for another user when they start a recording, which then enables the attacker read/write access to the victim's Whiteboard.
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 17:58 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nextcloud | whiteboard |
Affected:
1.0.0 , < 1.0.0
(semver)
|
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CVE-2026-87897 (GCVE-0-2026-87897)
Vulnerability from cvelistv5 – Published: 2026-10-27 16:15 – Updated: 2026-11-04 17:59
VLAI
EPSS
VEX
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 authentication token for another user when they start a recording, which then enables the attacker read/write access to the victim's Whiteboard.
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 17:58 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nextcloud | whiteboard |
Affected:
1.0.0 , < 1.0.0
(semver)
|
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