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TI-2026-65531 Aliases CVE-2026-102878GHSA-wfc7-pjhg-rg95

mcp-chrome-bridge through 1.0.31 CORS Origin Bypass

Priority HIGH 72CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-346.

Summary

mcp-chrome-bridge through 1.0.31 contains an origin validation error in the native-server HTTP API that allows attackers to bypass CORS restrictions. Attackers can craft malicious web pages that make cross-origin requests to the local server and invoke browser automation tools including script execution, page content reading, and screenshot capture.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00798 56th percentileScored 2026-11-07
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
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
hangwinmcp-chrome-bridgeup to 1.0.31—No fix listedCNA
  • mcp-chrome-bridge Vendorhangwin Affected up to 1.0.31 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-2026-102878
  2. 2026-10-03 Alias added: GHSA-wfc7-pjhg-rg95
  3. 2026-10-27 EPSS moved to the 50th–90th percentile

References

Other 3

Sources

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