CVE-2026-88415 Cross-site scripting in n/a
Attackers can inject malicious scripts via the article content field in MCMS, potentially leading to session hijacking or code execution.
- 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-2026-88415?
CVE-2026-88415 is a high-severity cross-site scripting vulnerability in n/a, published on 22 Sep 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
MCMS 6.1.1 through 6.2.1 is vulnerable to stored Cross-Site Scripting (XSS). The article content field `contentDetails` is excluded from the global XSS filter.
Weakness: CWE-79
Which versions are affected by CVE-2026-88415?
How do I fix CVE-2026-88415?
No fix has been published for CVE-2026-88415 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-2026-88415 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88415 exists.
Sources
Also known as GHSA-7c27-g5rf-hg4g.