What is CVE-2020-13869?

CVE-2020-13869 is a medium-severity vulnerability in Verbb Comments, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-06-05.

How severe is CVE-2020-13869?

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

XSS in Verbb Comments

CVE-2020-13869

An issue was discovered in the Comments plugin before 1.5.6 for Craft CMS. There is stored XSS via a guest name.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-06-05 · 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: 0.005 (43.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Verbb Comments

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/verbb/comments/blob/craft-3/CHANGELOG.md (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2020-13869?: CVE-2020-13869 is a medium-severity vulnerability in Verbb Comments, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-06-05.
How severe is CVE-2020-13869?: Medium severity. CVSS v3 base score is 5.4 out of 10.