What is CVE-2023-6527?

CVE-2023-6527 is a medium-severity vulnerability in I13websolution Email Subscription Popup, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-12-06.

How severe is CVE-2023-6527?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2023-6527 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in I13websolution Email Subscription Popup

CVE-2023-6527

The Email Subscription Popup plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the HTTP_REFERER header in all versions up to, and including, 1.2.18 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (30.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

I13websolution Email_subscription_popup
Nik00726 Email Subscription Popup — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Patch)

Frequently asked questions

What is CVE-2023-6527?: CVE-2023-6527 is a medium-severity vulnerability in I13websolution Email Subscription Popup, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-12-06.
How severe is CVE-2023-6527?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-6527 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.