CVE-2024-9103 Persistent XSS in blocked messages
Attackers can inject persistent scripts into blocked messages, potentially executing code or hijacking user sessions in Forcepoint Email Security.
- 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-2024-9103?
CVE-2024-9103 is a medium-severity cross-site scripting vulnerability in Forcepoint Email Security, published on 24 Mar 2025. 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
Improper Neutralization of Script in Attributes in a Web Page vulnerability in Forcepoint Email Security (Blocked Messages module) allows Stored XSS. This issue affects Email Security through 8.5.5.
Weakness: CWE-83
Which versions are affected by CVE-2024-9103?
How do I fix CVE-2024-9103?
No fix has been published for CVE-2024-9103 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-2024-9103 being exploited?
There is no known exploitation of CVE-2024-9103 in the wild and no public exploit code.
Sources
Also known as GHSA-229f-x33g-7vx4.