CVE-2026-18825

Origin validation error in the connect-xcors npm package

State: Published
Severity: 5.3 Medium
Published: Sep 28, 2026
Updated: Oct 5, 2026
Reserved: Aug 4, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	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	TCS-CERT

Weaknesses

CWE-346

Affected Products

Product	Versions
connect-corsgithub.com/antono	0.5.6 and earlierAffected

References

https://www.thalesgroup.com/en/search/cybersecurity/cybersecurity-services/cve-2026-18825

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