CVE-2026-78742 Cross-site scripting in n/a
An attacker can inject malicious scripts into the Multimedia library introduction, potentially executing code or hijacking user sessions in Silverpeas Core.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-78742?
CVE-2026-78742 is a medium-severity cross-site scripting vulnerability in n/a, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Silverpeas Core <=6.4.6 is vulnerable to Cross Site Scripting (XSS) via the Multimedia library application introduction.
Weakness: CWE-79
Which versions are affected by CVE-2026-78742?
How do I fix CVE-2026-78742?
No fix has been published for CVE-2026-78742 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-2026-78742 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-78742 exists.
Sources
Also known as GHSA-39x9-gq6g-5jcf.