CVE-2026-18957 Stored XSS in Menulux Software's Menulux Portal
Attackers can inject malicious scripts into the Menulux Portal, potentially stealing user sessions or executing code in victim browsers.
- 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-2026-18957?
CVE-2026-18957 is a medium-severity cross-site scripting vulnerability in Menulux Portal, published on 4 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
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Menulux Software Inc. Menulux Portal allows Stored XSS.
This issue affects Menulux Portal: before 20260903211448.
Weakness: CWE-79
Which versions are affected by CVE-2026-18957?
How do I fix CVE-2026-18957?
No fix has been published for CVE-2026-18957 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-2026-18957 being exploited?
There is no known exploitation of CVE-2026-18957 in the wild and no public exploit code.
Sources
Also known as GHSA-hwxg-9xv5-wjh5.