What is the CVSS score of CVE-2021-21630?

CVE-2021-21630 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 72.4%.

Is there a patch available for CVE-2021-21630?

Yes, a patch is available for CVE-2021-21630. Update the affected software to the latest version immediately.

Extra Columns CVE-2021-21630

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2021-03-30 jenkinsci-cert@googlegroups.com

Jenkins XSS Extra Columns

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Mar 30, 2021 - 12:16 nvd

MEDIUM 5.4

DescriptionNVD

Jenkins Extra Columns Plugin 1.22 and earlier does not escape parameter values in the build parameters column, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

AnalysisAI

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Jenkins Extra Columns Plugin 1.22 and earlier does not escape parameter values in the build parameters column, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission. Affected products include: Jenkins Extra Columns.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.