CVE-2026-8869 Mutual Funds Data <= 1.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' Shortcode Attribute
Authenticated attackers can inject arbitrary scripts via the title shortcode attribute, leading to stored XSS execution on victim pages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8869?
CVE-2026-8869 is a medium-severity cross-site scripting vulnerability in mutualfunddata Mutual Funds Data, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Mutual Funds Data plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' shortcode attribute in versions up to, and including, 1.2.1. This is due to insufficient input sanitization and output escaping on the user supplied 'title' attribute in the mfd_shortcode() function, which is concatenated directly into the HTML output within a <caption> element. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-8869?
How do I fix CVE-2026-8869?
No fix has been published for CVE-2026-8869 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-2026-8869 being exploited?
There is no known exploitation of CVE-2026-8869 in the wild and no public exploit code.
Sources
Also known as GHSA-267x-9qpf-6c8j.