Quick answers
- Is CVE-2026-38947 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-38947 being exploited in the wild.
- How severe is CVE-2026-38947?
- Medium severity, with a CVSS score of 6.1, published 5 May 2026.
- Which products and versions are affected?
- Fluentcms 1.2.3.
- Is there a fix for CVE-2026-38947?
- 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-2026-38947 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-38947?
- Check whether you run Fluentcms 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 Cross-Site Scripting (XSS) vulnerability exists in FluentCMS 1.2.3 within the TextHTML plugin, specifically affecting the /pagepreview functionality. The root cause is improper neutralization of user-supplied input before it is rendered in the HTTP response (CWE-79). An attacker can exploit this by accessing the page preview mode, selecting the TextHTML plugin, and injecting a malicious payload via the edit menu. The attack requires a user to interact with the crafted content (UI:R) but does not require prior authentication (PR:N). Successful exploitation allows for arbitrary JavaScript execution in the context of the victim's browser session.
Affected products
- FluentCMS FluentCMS 1.2.3
Timeline
- 2026-03-02: disclosed: Issue reported on GitHub repository
- 2026-05-05: advisory: CVE published to NVD