Trying To Generate an Access Token Using a SAML2 Assertion Grant Type Fails with: The assertion is in malformed format and can not be parsed
(Doc ID 2459355.1)
Last updated on JULY 25, 2023
Applies to:
Identity Cloud Service (IDCS) - Version N/A and laterInformation in this document applies to any platform.
Symptoms
Trying to obtain an access token using the SAML2 Assertion Grant Type using:
curl -i -H 'Authorization: Basic <base64Encoded clientid:secret>' -H 'Content-Type: application/x-www-form-urlencoded;charset=UTF-8' --request POST https://tenant-base-url/oauth2/v1/token -d 'grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Asaml2-bearer&assertion=<NONbase64Encoded assertion value>&scope=<scope value>' fails with:
{
"error": "invalid_grant",
"error_description": "The assertion is in malformed format and can not be parsed."
}
"error": "invalid_grant",
"error_description": "The assertion is in malformed format and can not be parsed."
}
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |