CVE-2021-27961 Cross-site scripting in n/a
Reflected XSS in Evesys allows attackers to execute arbitrary scripts in victim browsers via the indexeva.php action parameter.
- 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-2021-27961?
CVE-2021-27961 is a medium-severity cross-site scripting vulnerability in n/a, published on 9 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
evesys 7.1 (2152) through 8.0 (2202) allows Reflected XSS via the indexeva.php action parameter.
Weakness: CWE-79
Which versions are affected by CVE-2021-27961?
How do I fix CVE-2021-27961?
No fix has been published for CVE-2021-27961 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-2021-27961 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-27961 exists.
Sources
Also known as GHSA-r93p-qv3h-hq2m.