CVE-2021-21699

Description

Jenkins Active Choices Plugin 2.5.6 and earlier does not escape the parameter name of reactive parameters and dynamic reference parameters, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 50.54% Top 5%
Vendor Advisory jenkins.io
Affected: Jenkins project Jenkins Active Choices Plugin
Published at:
Updated at:

References

Link Tags
https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2219 vendor advisory
http://www.openwall.com/lists/oss-security/2021/11/12/1 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-21699?
CVE-2021-21699 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21699?
To fix CVE-2021-21699, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21699 being actively exploited in the wild?
It is possible that CVE-2021-21699 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~51% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21699?
CVE-2021-21699 affects Jenkins project Jenkins Active Choices Plugin.
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