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CVE-2021-21418

Potential XSS injection in the newsletter conditions field

MEDIUM
5.4
CVSS Score
Published: March 31, 2021 at 05:35 PM UTC
Updated: June 17, 2026 at 03:35 AM UTC
1 product affected across 1 vendorPs Emailsubscription

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.8%

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ps Emailsubscription· Prestashopcomposer
95%
v < 2.6.12.6.0 ≤ v < 2.6.1
Affected range stops below 2.6.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/PrestaShop/ps_emailsubscription/commit/664ffb225e2afb4a32640bbedad667dc6e660b70
x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/PrestaShop/ps_emailsubscription/releases/tag/v2.6.1
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/PrestaShop/ps_emailsubscription/security/advisories/GHSA-vwfx-hh3w-fj99
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://packagist.org/packages/prestashop/ps_emailsubscription

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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