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TI-2026-04355 Aliases CVE-2026-4995GHSA-mqr9-jj39-7x6x

wandb OpenUI Window Message Event index.html cross site scripting

Priority MEDIUM 56CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting, Code execution
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79 and CWE-94.

Summary

A vulnerability was determined in wandb OpenUI up to 1.0. Affected by this vulnerability is an unknown functionality of the file frontend/public/annotator/index.html of the component Window Message Event Handler. This manipulation causes cross site scripting. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00198 9th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
wandbOpenUI1.0—No fix listedCNA
  • OpenUI Vendorwandb Affected 1.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4995
  2. 2026-10-03 Alias added: GHSA-mqr9-jj39-7x6x

References

Exploit 1

  • TI-2024-09867 Unauthenticated File Upload in wandb/openui CVSS 3.0MEDIUM 6.1
  • TI-2025-00151 Stored Cross-site Scripting (XSS) in wandb/openui CVSS 3.0MEDIUM 5.4
  • TI-2026-04352 wandb OpenUI HTMLAnnotator server.py get_share HTML injection CVSS 4.0MEDIUM 5.3
  • TI-2026-04354 wandb OpenUI APIStatusError server.py generic_exception_handler information exposure CVSS 4.0MEDIUM 5.1
  • TI-2026-04353 wandb OpenUI config.py hard-coded credentials CVSS 4.0MEDIUM 4.8
  • TI-2026-61982 Weights & Biases wandb before 0.29.0 Path Traversal via File Download CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences