Potential XSS injection in the newsletter conditions field

MEDIUM 5.4CVE-2021-21418 · GHSA-vwfx-hh3w-fj99 · Published 31/03/2021 · updated 17/06/2026

In short

CVE-2021-21418 is a MEDIUM (CVSS 5.4) vulnerability affecting prestashop/ps_emailsubscription, ps emailsubscription (prestashop).
Chance of exploitation in the next 30 days (EPSS): 0.79%, higher than 56.1% of all vulnerabilities.
Fix: update to 2.6.1 or later.

Package	Affected versions	Patched versions
prestashop/ps_emailsubscription Packagist	`< 2.6.1`	`2.6.1`
ps emailsubscription prestashop	`≥ 2.6.0, < 2.6.1`	`2.6.1`

Description

Impact

An employee can inject javascript in the newsletter condition field that will then be executed on the front office

Patches

The issue has been fixed in 2.6.1

NVD 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

References

PrestaShop/ps_emailsubscription security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2021-21418 · ADVISORY
PrestaShop/ps_emailsubscription commit 664ffb2 · WEB
PrestaShop/ps_emailsubscription release v2.6.1 · WEB
packagist.org/packages/prestashop/ps_emailsubscription · WEB

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