CVE-2021-21669
XXE vulnerability in Jenkins Generic Webhook Trigger Plugin
9.8
CRITICAL
CVSS 3.1
EPSS 0.21%
Description
Jenkins Generic Webhook Trigger Plugin 1.72 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks. This allows attackers with the ability to call webhooks configured to extract parameters using XPath to have Jenkins parse a crafted XML request body that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery. Jenkins Generic Webhook Trigger Plugin 1.74 disables external entity resolution for its XML parser.
How to fix CVE-2021-21669
To remediate CVE-2021-21669, upgrade the affected package to a fixed version below.
- —upgrade to 1.74 or later
Is CVE-2021-21669 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.74
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |