CVE-2021-21659 XXE vulnerability in Jenkins URLTrigger Plugin
An attacker can exploit XML external entity vulnerabilities in the Jenkins URLTrigger Plugin to read sensitive files or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-21659?
CVE-2021-21659 is a high-severity vulnerability in Jenkins URLTrigger Plugin, published on 25 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Jenkins URLTrigger Plugin 0.48 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.
Which versions are affected by CVE-2021-21659?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:urltrigger. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:urltrigger Maven | All versions | 0.49 |
org.jenkins-ci.plugins:urltrigger Maven | All versions | 0.49 |
Products include Jenkins Urltrigger.
How do I fix CVE-2021-21659?
Upgrade org.jenkins-ci.plugins:urltrigger to 0.49 or later.
Is CVE-2021-21659 being exploited?
There is no known exploitation of CVE-2021-21659 in the wild and no public exploit code.
Other vulnerabilities in Jenkins URLTrigger Plugin
Sources
Also known as GHSA-34j5-c4cv-mmg5.