What is CVE-2020-2137?

CVE-2020-2137 is a medium-severity vulnerability in Jenkins Timestamper, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-03-09.

How severe is CVE-2020-2137?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Jenkins Timestamper

CVE-2020-2137

Jenkins Timestamper Plugin 1.11.1 and earlier does not sanitize HTML formatting of its output, resulting in a stored XSS vulnerability exploitable by attackers with Overall/Administer permission.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-03-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Jenkins Timestamper
Jenkins Project Timestamper Plugin — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

jenkins.io/security/advisory/2020-03-09/ (Vendor Advisory)
www.openwall.com/lists/oss-security/2020/03/09/1 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2020-2137?: CVE-2020-2137 is a medium-severity vulnerability in Jenkins Timestamper, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-03-09.
How severe is CVE-2020-2137?: Medium severity. CVSS v3 base score is 4.8 out of 10.