Medium severity · published Jan 13, 2021
CVE-2021-21611
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape display names and IDs of item types shown on the New Item page, resulting in a stored cross-site scripting (XSS)…
5.4
CVSS
1%
EPSS
No
On KEV
Description
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape display names and IDs of item types shown on the New Item page, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to specify display names or IDs of item types.
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)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
through 2.263.1; through 2.274 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21611
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21611
Vendor Advisory
https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2171
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