TI-2023-06006 Aliases CVE-2023-6555 GHSA-fwrh-jr8g-7mf2

Email Subscription Popup < 1.2.20 - Reflected XSS

MEDIUM 60CWE-79Published 2024-01-08 · Updated 2025-06-18

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The Email Subscription Popup WordPress plugin before 1.2.20 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00442 38th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix Fixed Email Subscription Popup (Unknown): 1.2.20

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	Email Subscription Popup	before 1.2.20	1.2.20	Patch available	CNA

Email Subscription Popup VendorUnknown Affected before 1.2.20 Fixed in 1.2.20 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:i13websolution:email_subscription_popup::::::wordpress::*	before 1.2.20	Vulnerable	nik00726

cpe:2.3:a:i13websolution:email_subscription_popup:*:*:*:*:*:wordpress:*:* Versions before 1.2.20 Vulnerable ·nik00726

Remediation

Fix · CNA Email Subscription Popup (Unknown) Fixed in 1.2.20

Timeline

2026-10-02 Threatist record created from CVE-2023-6555
2026-10-03 Alias added: GHSA-fwrh-jr8g-7mf2

References

Exploit 1

https://wpscan.com/vulnerability/58803934-dbd3-422d-88e7-ebbc5e8c0886

TI-2024-18563 WordPress Email Subscription Popup plugin <= 1.2.20 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
TI-2023-14325 WordPress Email Subscription Popup Plugin <= 1.2.16 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1HIGH 7.1
TI-2024-10369 Cross-site scripting in nik00726 Email Subscription Popup CVSS 3.1MEDIUM 6.4
TI-2023-05982 Email Subscription Popup <= 1.2.18 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences