CVE-2020-19947

Name: CVE-2020-19947
Creator: NVD / NIST
Published: 2023-03-16T15:15:09.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 0.95%

Last modified Jun 17, 2026

CVE-2020-19947 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. Cross Site Scripting vulnerability found in Markdown Edit allows a remote attacker to execute arbitrary code via the edit parameter of the webpage.. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

Cross Site Scripting vulnerability found in Markdown Edit allows a remote attacker to execute arbitrary code via the edit parameter of the webpage.

Metrics

CVSS 3.1

9.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.95%

56.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Markdown Edit Project	Markdown Edit	All versions

References

https://github.com/georgeOsdDev/markdown-edit/issues/12Exploit, Issue Tracking, Third Party Advisory
https://github.com/georgeOsdDev/markdown-edit/issues/12Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Mar 16, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-19947?

Cross Site Scripting vulnerability found in Markdown Edit allows a remote attacker to execute arbitrary code via the edit parameter of the webpage.

How severe is CVE-2020-19947?

CVE-2020-19947 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2020-19947?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-19947?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST