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01 Record

CVE-2026-114126

Storybook dev server: devices on the same network can obtain the WebSocket token and write code into story files

HighPUBLISHEDCNA: GitHub_M
CNA base score8.7 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N
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02 Description

Storybook dev server: devices on the same network can obtain the WebSocket token and write code into story files

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.52% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 44.4% of scored records. A rank, not a probability.
NVD base score
8.7 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD 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
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-28.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-21 17:21Z7 DAYS AGO
Last updated
2026-10-28 01:28Z1 DAY AGO
Reserved
2026-10-20
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.7)
CNA 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
Weaknesses
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
  • CWE-94Improper Control of Generation of Code ('Code Injection')Base
  • CWE-306Missing Authentication for Critical FunctionBase
  • CWE-201Insertion of Sensitive Information Into Sent DataBase
Data version
5.2
Document digest
cb5a261c4d359669dc66a786dee3b464b6567a02cae0987bda1d98e59dff0035

05 Affected products

VendorProductVersionsPlatforms
storybookjsstorybook>= 8.0.0, < 8.6.19, >= 9.0.0, < 9.1.21, >= 10.0.0, < 10.6.2, >= 11.0.0-alpha.0, < 11.0.0-alpha.6—

06 References