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.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade jenkins-ltsUpgrade jenkins | Mar 30, 2026 | Mar 27, 2026 |
| Jenkins 2026 03 18 | — | Upgrade Jenkins to the latest versionUpgrade Jenkins to version 2.555Upgrade Jenkins LTS to version 2.541.3Upgrade Jenkins LTS to the latest version | Mar 19, 2026 | Mar 18, 2026 |
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