Vulnerability · Published Sep 28, 2026 · Assigned by TCS-CERT
CVE-2026-18825Origin validation error in the connect-xcors npm package
Medium 5.3
In plain English
A medium-severity security flaw in connect-cors from github.com/antono. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 4.0)5.3Medium
Exploit odds (30 days)0.2%top 92.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| github.com/antono | connect-cors | 0 – through 0.5.6 |
Weakness: CWE-346 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N