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hermes/agent
JunghwanNA fcd9011f8d fix(security): separate OAuth PKCE state from code_verifier
The PKCE flow reused the code_verifier as the OAuth state parameter.
Per RFC 6749 §10.12 and RFC 7636, these serve different purposes:
state is an anti-CSRF token visible in the authorization URL; the
code_verifier must remain secret for the token exchange.

Generate an independent secrets.token_urlsafe(32) for state and
validate it on callback to provide actual CSRF protection.

Closes #10693
2026-05-16 02:38:02 -07:00
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