CVE-2026-114126 Storybook - Remote Code Execution

Storybook 8.0.0 to 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6 contains a remote code execution caused by exposed WebSocket authentication token and weak story-write validation, letting LAN attackers execute code with developer privileges, exploit requires network access to load HTML pages.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
21 October 2026
Updated
22 October 2026
Weakness
CWE-22

Vendor fix

Update to versions 8.6.19, 9.1.21, 10.6.2, or 11.0.0-alpha.6 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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