What’s Vulnerable › Vulnerabilities
CVE-2026-33002
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-03-18 · updated 2026-06-17
- Weakness: CWE-350
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 products
- Jenkins: from 2.426.3 before 2.541.3; from 2.442 before 2.555 — fixed in 2.541.3, 2.555
How to fix
Upgrade to a fixed version: Jenkins 2.541.3, 2.555. Check the vendor advisory for mitigations.
References
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