Webhook SSL Error - Bitbucket-Jenkins Integration

[Dave King]

Hello,

I'm experiencing an SSL error when trying to configure a webhook from Bitbucket  Server to Jenkins, despite having properly loaded the SSL certificate into the Java keystore.

Webhook URL:
https://jenkins.test.local/bitbucket-scmsource-hook/notify?server_url=https://bitbucket.test.local:7999

Bitbucket server log:

2025-10-29 20:26:35,181 INFO [ForkJoinPool.commonPool-worker-7] c.a.w.i.p.DefaultWebhookDispatcher Webhook invocation [34d507ff-6eeb-41f2-bbd7-a543917e4101] to [https://jenkins.test.local/bitbucket-scmsource-hook/notify?server_url=https%3A%2F%2Fbitbucket.test.local%3A7999] failed with an error

Error webhook bitbucket gui:
An SSL error occurred, please check that the provided resource uses https.

What I've verified:

- SSL certificate is installed in Java keystore
- Jenkins is accessible over HTTPS
- Firewall rules allow communication between servers
- Certificate is valid and trusted with curl command from bitbucket server
Any guidance on resolving this SSL handshake issue would be greatly appreciated.