# 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.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 Jun 2026
- **Updated:** 24 Jun 2026
- **Also known as:** GHSA-jwhr-h7pc-3974

## 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 (Improper Certificate Validation)

## 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 | Ecosystem | 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: 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

- [CVE-2023-41937](https://insights.sbomify.com/CVE-2023-41937/): SSRF vulnerability in Jenkins Bitbucket Push and Pull Request Plugin allows capturing credentials (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-57289 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-57289 in the wild and no public exploit code.

Affected packages and fixed versions:
- io.jenkins.plugins:bitbucket-push-and-pull-request (Maven): affected all versions; fixed in 3.3.9
- io.jenkins.plugins:bitbucket-push-and-pull-request (Maven): affected all versions; fixed in 3.3.9

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-57289/ (Markdown: https://insights.sbomify.com/CVE-2026-57289/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-57289
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-57289
- OSV: https://osv.dev/vulnerability/CVE-2026-57289

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-57289/
Summaries are generated and may contain mistakes; the official description above is the record.