What is CVE-2020-19952?

CVE-2020-19952 is a medium-severity vulnerability in Jbt Live \(Github-Flavored\) Markdown Editor, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-08-11.

How severe is CVE-2020-19952?

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

XSS in Jbt Live \(Github-Flavored\) Markdown Editor

CVE-2020-19952

Cross Site Scripting (XSS) vulnerability in Rendering Engine in jbt Markdown Editor thru commit 2252418c27dffbb35147acd8ed324822b8919477, allows remote attackers to execute arbirary code via crafted payload or opening malicious .md file.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-08-11 · 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: 0.007 (50.5th percentile), scored 2026-10-02.

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

Jbt Live \(Github-Flavored\) Markdown Editor

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/jbt/markdown-editor/issues/106 (Exploit, Third Party Advisory, Issue Tracking)
github.com/jbt/markdown-editor/commit/228f1947a5242a6fbe2995d72d21b7e5f5178f35 (Patch)
github.com/jbt/markdown-editor/pull/110 (Patch)

Frequently asked questions

What is CVE-2020-19952?: CVE-2020-19952 is a medium-severity vulnerability in Jbt Live \(Github-Flavored\) Markdown Editor, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-08-11.
How severe is CVE-2020-19952?: Medium severity. CVSS v3 base score is 6.1 out of 10.