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Published recentlyPublished Sep 30, 2026. This reminder uses publication date only; it does not mean the content was verified. Review again after Mar 29, 2027.

Jenkins: 403 No valid crumb was included in the request

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Finally, this post helped me to do away with the crumb problem, but still securing Jenkins from a CSRF attack. Solution for no-valid crumb included in the request issue Basically, we need to first request for a crumb with authentication and then issue a POST API calls with a crumb as a header along with authentication again. This is how I did it, curl -v -X GET http://jenkins-url:8080/crumbIssuer/api/json --user [username]:[password] The response was, { "_class":"hudson.security.csrf.DefaultCrumbIssuer", "crumb":"0db38413bd7ec9e98974f5213f7ead8b", "crumbRequestField":"Jenkins-Crumb" } Then the POST API call with the above crumb information in it. curl -X POST http://jenkins-url:8080/job/[job-name]/build --user [username]:[password] -H 'Jenkins-Crumb: 0db38413bd7ec9e98974f5213f7ead8b'

Context: I configured Jenkins in Spinnaker as follows and setup the Spinnaker pipeline. jenkins: # If you are integrating Jenkins, set its location here using the baseUrl # field and provide the username/password credentials. # You must also enable the "igor" service listed separately. # # If you have multiple Jenkins servers, you will need to list # them in an igor-local.yml. See jenkins.masters in config/igor.yml. # # Note that Jenkins is not installed with Spinnaker so you must obt

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