CVE-2021-21418

Name: CVE-2021-21418
Creator: NVD / NIST
Published: 2021-03-31T18:15:14.503+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2021-21418 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. ps_emailsubscription is a newsletter subscription module for the PrestaShop platform. An employee can inject javascript in the newsletter condition field that will then be executed on the front office The issue has been fixed in 2.6.1. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

ps_emailsubscription is a newsletter subscription module for the PrestaShop platform. An employee can inject javascript in the newsletter condition field that will then be executed on the front office The issue has been fixed in 2.6.1

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.79%

51.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Prestashop	Ps Emailsubscription	>= 2.6.0, < 2.6.1

References

https://github.com/PrestaShop/ps_emailsubscription/commit/664ffb225e2afb4a32640bbedad667dc6e660b70Patch, Third Party Advisory
https://github.com/PrestaShop/ps_emailsubscription/releases/tag/v2.6.1Release Notes, Third Party Advisory
https://github.com/PrestaShop/ps_emailsubscription/security/advisories/GHSA-vwfx-hh3w-fj99Third Party Advisory
https://packagist.org/packages/prestashop/ps_emailsubscriptionThird Party Advisory
https://github.com/PrestaShop/ps_emailsubscription/commit/664ffb225e2afb4a32640bbedad667dc6e660b70Patch, Third Party Advisory
https://github.com/PrestaShop/ps_emailsubscription/releases/tag/v2.6.1Release Notes, Third Party Advisory
https://github.com/PrestaShop/ps_emailsubscription/security/advisories/GHSA-vwfx-hh3w-fj99Third Party Advisory
https://packagist.org/packages/prestashop/ps_emailsubscriptionThird Party Advisory

Timeline

Published: Mar 31, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21418?

How severe is CVE-2021-21418?

CVE-2021-21418 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21418?

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-2021-21418?

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

Scan your code now

Source: NVD / NIST