CVE-2026-27404: Designthemes LMS Theme unauthenticated XSS

CVE-2026-27404 · Severity: high · CVSS 7.1 · Published 2026-07-02

The LMS theme for WordPress, used for managing educational content and online courses, contains a security flaw that allows attackers to run malicious scripts in a user's browser. If a site administrator or visitor clicks a specially crafted link, an attacker could steal login sessions, redirect users to malicious websites, or deface the site. This vulnerability is particularly risky because it does not require the attacker to have an account on the site.

Vendors: Designthemes.

Quick answers

Is CVE-2026-27404 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-27404 being exploited in the wild.
How severe is CVE-2026-27404?
High severity, with a CVSS score of 7.1, published 2 July 2026.
Which products and versions are affected?
Designthemes LMS Theme <= 9.7.
Is there a fix for CVE-2026-27404?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-27404 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-27404?
Check whether you run Designthemes LMS Theme 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 Designthemes LMS theme for WordPress (versions <= 9.7) due to improper neutralization of user-supplied input during web page generation (CWE-79). The flaw allows an unauthenticated remote attacker to inject arbitrary JavaScript into the context of a victim's browser session. Exploitation requires a victim to interact with a malicious link or crafted page (User Interaction: Required). Successful exploitation can lead to session hijacking, unauthorized actions on behalf of a privileged user, or delivery of malicious payloads. As of the advisory date, no official patch has been released.

Affected products

  • Designthemes LMS Theme <= 9.7

Timeline

  • 2025-11-07: other: Vulnerability reported by researcher João Pedro S Alcântara (Kinorth)
  • 2026-06-30: advisory: Patchstack published advisory
  • 2026-07-02: disclosed: CVE published to NVD dataset

References

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