https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 07 Oct 2026 07:49:31 +0000 https://cve.radiocsirt.org/vuln/cve-2026-81315 <p><strong>Affected:</strong> ash-project ash_ai</p> <p>Origin Validation Error vulnerability in ash-project ash_ai allows a malicious web page to bypass the MCP server&#39;s DNS-rebinding protection and issue cross-site requests to a user&#39;s local MCP server with that user&#39;s actor.</p> <p>In AshAi.Mcp.Server, with the default allowed_origins: nil, origin_allowed?/3 accepts an origin when uri.host == conn.host and the forwarded scheme is https. Both values are attacker-controlled: conn.host comes from the Host header and the scheme is read from the raw x-forwarded-proto header with no trusted-proxy check. Under DNS rebinding the browser sends the attacker&#39;s origin and a matching host, and page JavaScript may set X-Forwarded-Proto: https, so the check passes with no TLS or proxy involved. The fix trusts only localhost origins by default; other origins require an explicit allowed_origins allowlist.</p> <p>This issue affects ash_ai: from 0.8.0 before 1.0.0.</p> <p><strong>Affected:</strong> ash-project ash_ai</p> <p>Origin Validation Error vulnerability in ash-project ash_ai allows a malicious web page to bypass the MCP server&#39;s DNS-rebinding protection and issue cross-site requests to a user&#39;s local MCP server with that user&#39;s actor.</p> <p>In AshAi.Mcp.Server, with the default allowed_origins: nil, origin_allowed?/3 accepts an origin when uri.host == conn.host and the forwarded scheme is https. Both values are attacker-controlled: conn.host comes from the Host header and the scheme is read from the raw x-forwarded-proto header with no trusted-proxy check. Under DNS rebinding the browser sends the attacker&#39;s origin and a matching host, and page JavaScript may set X-Forwarded-Proto: https, so the check passes with no TLS or proxy involved. The fix trusts only localhost origins by default; other origins require an explicit allowed_origins allowlist.</p> <p>This issue affects ash_ai: from 0.8.0 before 1.0.0.</p> https://cve.radiocsirt.org/vuln/cve-2026-81315