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Sunday, 13 September 2026
8 agent hacks today▲ 7 vs yesterday (1)
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Incident database

Origin validation error in ash_ai MCP server allows DNS rebinding attacks

A vulnerability in ash_ai's MCP server allows malicious web pages to bypass DNS-rebinding protection through improper origin validation, enabling cross-site requests to local MCP servers. The issue affects versions 0.8.0 before 1.0.0 and has been fixed by trusting only localhost origins by default.

Disclosed 31 August 2026 · Record updated 13 September 2026

Impact

Malicious web pages can bypass DNS-rebinding protection and issue cross-site requests to a user's local MCP server with that user's actor privileges.

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-81315