Is CVE-2026-8351 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8351 being exploited in the wild.

How severe is CVE-2026-8351?

Medium severity, with a CVSS score of 6.4, published 3 July 2026.

Which products and versions are affected?

RomeTheme RTMKit up to, and including, 2.0.7.

Is there a fix for CVE-2026-8351?

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-2026-8351 attacked?

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

Am I affected by CVE-2026-8351?

Check whether you run RomeTheme RTMKit 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-2026-8351: rometheme RTMKit Stored XSS in Advanced Heading widget

CVE-2026-8351 · Severity: medium · CVSS 6.4 · Published 2026-07-03

The RTMKit plugin for WordPress, which provides design widgets for website building, contains a security flaw in its Advanced Heading component. This vulnerability allows users with basic contributor-level access to embed malicious scripts into website pages. When other visitors or administrators view these pages, the scripts can execute automatically, potentially leading to unauthorized actions or data theft.

Technologies: RomeTheme RTMKit. Vendors: RomeTheme.

Quick answers

Is CVE-2026-8351 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8351 being exploited in the wild.
How severe is CVE-2026-8351?: Medium severity, with a CVSS score of 6.4, published 3 July 2026.
Which products and versions are affected?: RomeTheme RTMKit up to, and including, 2.0.7.
Is there a fix for CVE-2026-8351?: 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-2026-8351 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-8351?: Check whether you run RomeTheme RTMKit 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 RTMKit plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient output escaping on the 'background_text_heading' setting within the render() function of the Advanced Heading widget. The vulnerability occurs because the plugin concatenates user-supplied values directly into an HTML attribute without applying the esc_attr() function. This allows authenticated attackers with contributor-level permissions or higher to inject arbitrary web scripts into a page. These scripts will execute in the context of any user's browser who visits the affected page. The issue is addressed in version 2.0.8.

Affected products

rometheme RTMKit up to, and including, 2.0.7

Timeline

2026-07-03: disclosed
2026-07-03: advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.