In APache APISIX before 3.13.1, an attacker can obtain a plugin-configured secret via an error message response by sending an incorrect JSON Web Token to a route protected by the jwt-auth plugin. The error logic in the dependency library lua-resty-jwt enables sending an RS256 token to an endpoint that requires an HS256 token, with the original secret value included in the error response.

Source: CVE-2022-29266

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