Is CVE-2026-8841 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8841 being exploited in the wild.

How severe is CVE-2026-8841?

Medium severity, with a CVSS score of 6.4, published 9 June 2026.

Which products and versions are affected?

WordPress Plugin Extra Settings for RocketChat Extra Settings for RocketChat up to, and including, 0.1.

Is there a fix for CVE-2026-8841?

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-2026-8841 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-8841?

Check whether you run WordPress Plugin Extra Settings for RocketChat Extra Settings for RocketChat 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-2026-8841: WordPress Extra Settings for RocketChat Stored XSS in rocketchat shortcode

CVE-2026-8841 · Severity: medium · CVSS 6.4 · Published 2026-06-09

The Extra Settings for RocketChat plugin for WordPress, which adds configuration options for RocketChat integration, contains a security flaw that allows users with contributor-level access to inject malicious scripts into website pages. When other users or administrators visit these affected pages, the scripts will execute automatically in their browsers. This could lead to unauthorized actions being performed on behalf of the victim or the theft of sensitive session information.

Quick answers

Is CVE-2026-8841 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8841 being exploited in the wild.
How severe is CVE-2026-8841?: Medium severity, with a CVSS score of 6.4, published 9 June 2026.
Which products and versions are affected?: WordPress Plugin Extra Settings for RocketChat Extra Settings for RocketChat up to, and including, 0.1.
Is there a fix for CVE-2026-8841?: 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-2026-8841 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-8841?: Check whether you run WordPress Plugin Extra Settings for RocketChat Extra Settings for RocketChat 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 Extra Settings for RocketChat plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping in the rxstg_shortcode() function. The vulnerability exists because the user-supplied 'title' attribute within the 'rocketchat' shortcode is concatenated directly into the HTML output. An authenticated attacker with contributor-level permissions or higher can exploit this by embedding malicious JavaScript in a post or page. When a site visitor views the compromised content, the script executes within the context of their session. This is tracked as CWE-79 and affects all versions up to 0.1.

Affected products

WordPress Plugin Extra Settings for RocketChat up to, and including, 0.1

Timeline

2026-06-09: disclosed
2026-06-09: advisory

References

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