CVE-2020-26799 Cross-site scripting in n/a
An unauthenticated attacker can execute arbitrary scripts in the victim's browser via reflected XSS in Luxcal, potentially stealing user data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-26799?
CVE-2020-26799 is a critical cross-site scripting vulnerability in n/a, published on 21 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A reflected cross-site scripting (XSS) vulnerability was discovered in index.php on Luxcal 4.5.2 which allows an unauthenticated attacker to steal other users' data.
Weakness: CWE-79
Which versions are affected by CVE-2020-26799?
How do I fix CVE-2020-26799?
No fix has been published for CVE-2020-26799 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-2020-26799 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-26799 exists.
Sources
Also known as GHSA-vpmc-2x8r-gfmc.