Medium severity · published Nov 12, 2021
CVE-2021-21699
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…
5.4
CVSS
88.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)88.5% · higher than 100% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Active Choices · Jenkins
through 2.5.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21699
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21699
Mailing List
http://www.openwall.com/lists/oss-security/2021/11/12/1
Vendor Advisory
https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2219
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