CVE-2026-87897
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.
Published:Oct 27, 2026
Last Modified:Oct 28, 2026
EPS:Oct 27, 2026
EPSS Score:0.00196
CVSS Score:4.6
Affected Products
Vendor
Product
Action
Vendor
Nextcloud
Product
Whiteboard
Nextcloud
Whiteboard
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
