CVE-2026-62863 MoLing - Broken Access Control

MoLing < 0.5.0 contains a broken access control vulnerability caused by unauthenticated SSE mode endpoints and permissive CORS, letting attackers steal sessionId via cross-origin EventSource and send unauthorized MCP tool calls, exploit requires victim to visit malicious web page.

CVSS base score 9.6 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.31% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Remote Code Execution, File System Read, File System Write
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
Published
30 October 2026
Updated
1 November 2026
Weakness
CWE-306

Vendor fix

Update to version 0.5.0 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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