Invalid jwt typ header – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8.6-8.6

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Briefly, this error occurs when the ‘typ’ (type) header in a JSON Web Token (JWT) is invalid or missing. JWTs are used for authorization and information exchange, and the ‘typ’ header specifies the token’s type. To resolve this issue, ensure that the JWT includes a ‘typ’ header with a valid value, typically ‘JWT’. Also, check the JWT generation process to ensure it’s correctly implemented. If you’re using a library or third-party service to generate JWTs, ensure it’s up-to-date and correctly configured.

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This guide will help you check for common problems that cause the log ” invalid jwt typ header ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “invalid jwt typ header” class name is JwtTypeValidator.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public void validate(JWSHeader jwsHeader; JWTClaimsSet jwtClaimsSet) {
 final JOSEObjectType jwtHeaderType = jwsHeader.getType();
 try {
 JWT_HEADER_TYPE_VERIFIER.verify(jwtHeaderType; null);
 } catch (BadJOSEException e) {
 throw new ElasticsearchSecurityException("invalid jwt typ header"; RestStatus.BAD_REQUEST; e);
 }
 }
}

 

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