CVE-2026-88852 Cross-site scripting in Snippets (Free) extension for Joomla
A lower-privileged author can inject malicious scripts via the url option in Joomla Snippets extensions, potentially compromising trusted users.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88852?
CVE-2026-88852 is a high-severity cross-site scripting vulnerability in regularlabs.com Snippets (Free) extension for Joomla, published on 14 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Joomla Extension - regularlabs.com - Privileged stored XSS via url option in Snippets Free extension for Joomla < 7.0.0, Snippets Pro extension for Joomla < 11.0.0 - Snippets substitutes variable values supplied by an article tag into saved Snippet content. The affected versions do not consider the article author's trust level. A lower-privileged author can therefore place an unsafe value into a security-sensitive position chosen by the trusted Snippet author.
Weakness: CWE-79
Which versions are affected by CVE-2026-88852?
How do I fix CVE-2026-88852?
No fix has been published for CVE-2026-88852 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-2026-88852 being exploited?
There is no known exploitation of CVE-2026-88852 in the wild and no public exploit code.
Sources
Also known as GHSA-h9wr-65g5-jgq7.