What is CVE-2020-11103?

CVE-2020-11103 is a critical-severity vulnerability in Webswing. CVSS score: 9.8/10. Published 2020-12-30.

How severe is CVE-2020-11103?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Webswing

CVE-2020-11103

JsLink in Webswing before 2.6.12 LTS, and 2.7.x and 20.x before 20.1, allows remote code execution.

Published 2020-12-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.029 (86.3th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.029 · change: +0.001

Affected products

Webswing

References

bitbucket.org/meszarv/webswing/issues/375/webswing-jslink-mechanism-remote-code (Third Party Advisory, Issue Tracking)
www.webswing.org/docs/2.6/discover/release_notes.html (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-11103?: CVE-2020-11103 is a critical-severity vulnerability in Webswing. CVSS score: 9.8/10. Published 2020-12-30.
How severe is CVE-2020-11103?: Critical severity. CVSS v3 base score is 9.8 out of 10.