CVE-2021-21418

Potential XSS injection in the newsletter conditions field

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

Category

4.6
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.26%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory packagist.org
Affected: PrestaShop ps_emailsubscription
Published at:
Updated at:

References

Link Tags
https://github.com/PrestaShop/ps_emailsubscription/security/advisories/GHSA-vwfx-hh3w-fj99 third party advisory
https://github.com/PrestaShop/ps_emailsubscription/commit/664ffb225e2afb4a32640bbedad667dc6e660b70 third party advisory patch
https://github.com/PrestaShop/ps_emailsubscription/releases/tag/v2.6.1 third party advisory release notes
https://packagist.org/packages/prestashop/ps_emailsubscription third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-21418?
CVE-2021-21418 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21418?
To fix CVE-2021-21418, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21418 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21418 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21418?
CVE-2021-21418 affects PrestaShop ps_emailsubscription.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.