CVEvulnerability

CVE-2026-59804

7.6 HIGH Published 2026-07-08 Modified 2026-10-25 Official page ↗
Status
Deferred
Published
2026-07-08
Last modified
2026-10-25
Assigner
[email protected]
CVSS 4.0 ([email protected])
7.6 HIGH — CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/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
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Weaknesses
CWE-1385, CWE-306

Description

Midscene Bridge Server through 1.10.3, fixed in commit 86f4118, contains a missing authentication and CORS misconfiguration vulnerability that allows unauthenticated remote attackers to hijack active bridge sessions by opening a cross-origin WebSocket connection to the local Socket.IO server, which performs no Origin header validation and requires no authentication token. Attackers can connect from any web page visited by the victim to seize the single-client slot, intercept and inject automation commands, exfiltrate command-payload data, or unconditionally terminate the server by supplying the MIDSCENE_BRIDGE_SIGNAL_KILL query parameter.

Related

Weakness · CWE (2)

  • CWE-1385 Missing Origin Validation in WebSockets weakness
  • CWE-306 Missing Authentication for Critical Functionality weakness

References