CVE-2026-14844 Master Slider <= 3.11.2 - Contributor+ Stored XSS via ms_slider Shortcode Attributes
Contributors can inject malicious scripts via shortcode attributes, leading to stored XSS when posts are viewed.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-14844?
CVE-2026-14844 is a medium-severity cross-site scripting vulnerability in Unknown Master Slider, published on 20 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Master Slider WordPress plugin through 3.11.2 does not sanitise and escape some of its shortcode attributes before outputting them in an inline script context, which could allow users with the Contributor role and above to perform Stored Cross-Site Scripting attacks that execute when the affected post is viewed.
No fixed version is available. Until one ships, restrict the Contributor role to trusted users, or deactivate the Master Slider WordPress plugin through 3.11.2. Site owners who need to keep it active can block the ms_slider shortcode for roles below Editor, for example with a shortcode-restriction Master Slider WordPress plugin through 3.11.2, which prevents the attack without removing the Master Slider WordPress plugin through 3.11.2.
Weakness: CWE-79
Which versions are affected by CVE-2026-14844?
How do I fix CVE-2026-14844?
No fix has been published for CVE-2026-14844 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-14844 being exploited?
There is no known exploitation of CVE-2026-14844 in the wild and no public exploit code.
Sources
Also known as GHSA-7q5g-f6v8-f8ch.