Is CVE-2026-12273 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-12273 being exploited in the wild.

How severe is CVE-2026-12273?

Informational severity, with a CVSS score of 4.3, published 13 July 2026.

Which products and versions are affected?

Themeum Tutor LMS before 3.9.13.

Is there a fix for CVE-2026-12273?

A patch was published on 2026-07-13: Fixed in version 3.9.13 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-12273 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-12273?

Check whether you run Themeum Tutor LMS 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.

CVE-2026-12273: Themeum Tutor LMS authorization bypass in comment handler

CVE-2026-12273 · Severity: info · CVSS 4.3 · Published 2026-07-13

Tutor LMS, a popular learning management system for WordPress, contains a flaw that allows registered users (such as students or subscribers) to bypass comment moderation. An attacker can post comments containing arbitrary links and HTML directly to any page or post on the site without an administrator's approval. This could be used to spread spam, perform SEO poisoning, or redirect users to malicious websites, damaging the site's reputation and user trust.

Technologies: Themeum Tutor LMS. Vendors: Themeum.

Quick answers

Is CVE-2026-12273 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-12273 being exploited in the wild.
How severe is CVE-2026-12273?: Informational severity, with a CVSS score of 4.3, published 13 July 2026.
Which products and versions are affected?: Themeum Tutor LMS before 3.9.13.
Is there a fix for CVE-2026-12273?: A patch was published on 2026-07-13: Fixed in version 3.9.13 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-12273 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-12273?: Check whether you run Themeum Tutor LMS 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

The vulnerability exists in the 'tutor_create_lesson_comment' AJAX handler. The plugin fails to verify if the user has permission to comment on a specific post or if the target post is even a valid lesson. While the handler enforces a nonce check, the required nonce is accessible to any authenticated user with subscriber-level privileges. Because the plugin explicitly sets the comment status to 'approved' upon insertion, attackers can inject arbitrary HTML (subject to wp_kses_post filtering) and hyperlinks into any post ID on the WordPress site, bypassing the standard WordPress comment moderation queue. This issue is resolved in version 3.9.13.

Affected products

Themeum Tutor LMS before 3.9.13

Timeline

2026-06-22: disclosed: Publicly published by WPScan
2026-07-13: advisory: NVD publication date
2026-07-13: patched: Fixed in version 3.9.13

References

https://wpscan.com/vulnerability/93031a51-fd53-48a0-a420-0024bbdaf45b/

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