What is CVE-2020-2248?

CVE-2020-2248 is a medium-severity vulnerability in Jenkins Jsgames, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-09-01.

How severe is CVE-2020-2248?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2020-2248 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Jenkins Jsgames

CVE-2020-2248

Jenkins JSGames Plugin 0.2 and earlier evaluates part of a URL as code, resulting in a reflected cross-site scripting (XSS) vulnerability.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-09-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Jenkins Jsgames
Jenkins Project Jsgames Plugin — versions unspecified, next of 0.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

404notf0und/CVE-Flow

References

jenkins.io/security/advisory/2020-09-01/ (Vendor Advisory)
www.openwall.com/lists/oss-security/2020/09/01/3 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2020-2248?: CVE-2020-2248 is a medium-severity vulnerability in Jenkins Jsgames, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-09-01.
How severe is CVE-2020-2248?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-2248 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.