CVE-2026-39514: Cozmoslabs Paid Member Subscriptions unauthenticated XSS

CVE-2026-39514 · Severity: high · CVSS 7.1 · Published 2026-06-15

The Paid Member Subscriptions plugin for WordPress, which manages memberships and content restriction, contains a security flaw that allows attackers to inject malicious scripts into the website. An attacker could use this to redirect users to fraudulent sites, steal session information, or deface the website. This occurs when a victim clicks on a specially crafted link provided by the attacker.

Technologies: Cozmoslabs Paid Member Subscriptions. Vendors: Cozmoslabs.

Quick answers

Is CVE-2026-39514 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-39514 being exploited in the wild.
How severe is CVE-2026-39514?
High severity, with a CVSS score of 7.1, published 15 June 2026.
Which products and versions are affected?
Cozmoslabs Paid Member Subscriptions <= 2.17.3.
Is there a fix for CVE-2026-39514?
A patch was published on 2026-04-20: Version 3.0.0 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-39514 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-39514?
Check whether you run Cozmoslabs Paid Member Subscriptions at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reflected Cross-Site Scripting (XSS) vulnerability exists in the Paid Member Subscriptions plugin for WordPress due to improper neutralization of user-supplied input during web page generation (CWE-79). The flaw allows unauthenticated attackers to inject arbitrary web scripts into pages that execute when a victim (typically an administrator or logged-in user) interacts with a crafted URL. This vulnerability is present in versions 2.17.3 and below. Successful exploitation can lead to session hijacking, unauthorized actions on behalf of the user, or redirection to malicious domains. The issue is resolved in version 3.0.0.

Affected products

  • Cozmoslabs Paid Member Subscriptions <= 2.17.3

Timeline

  • 2026-02-23: other: Vulnerability reported by researcher loris4py
  • 2026-04-20: advisory: Patchstack advisory published
  • 2026-06-15: disclosed: CVE published to NVD
  • 2026-04-20: patched: Version 3.0.0 released to address the vulnerability

References

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