CVE-2026-57289 Jenkins Bitbucket Push and Pull Request Plugin unconditionally disables SSL/TLS certificate validation
Attackers can intercept network traffic to capture Bearer tokens due to disabled SSL/TLS validation in the Jenkins Bitbucket plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-57289?
CVE-2026-57289 is a medium-severity vulnerability in Jenkins Bitbucket Push and Pull Request Plugin, published on 24 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Jenkins Bitbucket Push and Pull Request Plugin 3.3.8 and earlier unconditionally disables SSL/TLS certificate and hostname validation for connections sending Bearer token authenticated requests to the configured Bitbucket Server endpoint, allowing attackers able to intercept network traffic to capture the token.
Weakness: CWE-295
Which versions are affected by CVE-2026-57289?
2 open source packages ship an affected version, including io.jenkins.plugins:bitbucket-push-and-pull-request. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
io.jenkins.plugins:bitbucket-push-and-pull-request Maven | All versions | 3.3.9 |
io.jenkins.plugins:bitbucket-push-and-pull-request Maven | All versions | 3.3.9 |
Products include Jenkins Bitbucket Push and Pull Request.
How do I fix CVE-2026-57289?
Upgrade io.jenkins.plugins:bitbucket-push-and-pull-request to 3.3.9 or later.
Is CVE-2026-57289 being exploited?
There is no known exploitation of CVE-2026-57289 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Bitbucket Push and Pull Request Plugin
Sources
Also known as GHSA-jwhr-h7pc-3974.