GHSA-phhv-63fh-rrc8
Jenkins has a DNS rebinding vulnerability in WebSocket CLI origin validation
At a glance
- Published
- Updated
- CVE
- CVE-2026-33002
- Aliases
- BIT-jenkins-2026-33002
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Description
Jenkins 2.442 through 2.554 (both inclusive), LTS 2.426.3 through LTS 2.541.2 (both inclusive) performs origin validation of requests made through the CLI WebSocket endpoint by computing the expected origin for comparison using the Host or X-Forwarded-Host HTTP request headers, making it vulnerable to DNS rebinding attacks that allow bypassing origin validation.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.jenkins-ci.main:jenkins-core | introduced 2.442, fixed 2.555 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-33002 ADVISORY
- https://github.com/jenkinsci/jenkins/commit/348666da7136ef8270f88c0a7350562b0ba7f8ce WEB
- https://github.com/jenkinsci/jenkins PACKAGE
- https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3674 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |