CVE-2026-18825 Origin validation error in the connect-xcors npm package
Attackers can bypass origin verification in connect-xcors to perform cross-domain authenticated requests, requiring library upgrades.
- 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-2026-18825?
CVE-2026-18825 is a medium-severity vulnerability in github.com/antono connect-cors, published on 28 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
An Origin Validation Error in the middleware of the connect-xcors npm package allows an attacker to bypass origin verification and perform a cross domain authenticated request.
Weakness: CWE-346
Which versions are affected by CVE-2026-18825?
How do I fix CVE-2026-18825?
No fix has been published for CVE-2026-18825 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-18825 being exploited?
There is no known exploitation of CVE-2026-18825 in the wild and no public exploit code.
Sources
Also known as GHSA-8f76-923c-xvfq.