What is CVE-2020-29587?

CVE-2020-29587 is a medium-severity vulnerability in Simplcommerce, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-14.

How severe is CVE-2020-29587?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Simplcommerce

CVE-2020-29587

SimplCommerce 1.0.0-rc uses the Bootbox.js library, which allows creation of programmatic dialog boxes using Bootstrap modals. The Bootbox.js library intentionally does not perform any sanitization of user input, which results in a DOM XSS, because it uses the jQuery .html() function to directly append the payload to a dialog.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-01-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.5th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.5% 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

Simplcommerce — versions 1.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/simplcommerce/SimplCommerce/issues/969 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-29587?: CVE-2020-29587 is a medium-severity vulnerability in Simplcommerce, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-14.
How severe is CVE-2020-29587?: Medium severity. CVSS v3 base score is 5.4 out of 10.