CVE-2021-47929 WordPress Plugin Filterable Portfolio Gallery 1.0 Stored XSS
Authenticated attackers can inject malicious JavaScript into the gallery title, leading to code execution for all users viewing the page.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47929?
CVE-2021-47929 is a medium-severity cross-site scripting vulnerability in Filterable-Portfolio Filterable Portfolio Gallery, published on 10 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Filterable Portfolio Gallery 1.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious JavaScript by entering payloads in the title field. Attackers can store JavaScript code like image tags with onerror handlers that execute when the gallery is previewed, affecting all users viewing the page.
Weakness: CWE-79
Which versions are affected by CVE-2021-47929?
How do I fix CVE-2021-47929?
No fix has been published for CVE-2021-47929 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-2021-47929 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47929 exists.
Sources
Also known as GHSA-4c29-8572-7xww.