Vulnerability Description
sanic-cors version 2.2.0 and prior contains an improper regular expression in the try_match() function in sanic_cors/core.py that uses re.match without end-anchoring. This allows an attacker to bypass CORS origin allowlists by registering a domain that begins with a trusted origin string, to gain unauthorized access to cross-origin requests for authenticated resources.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/ashleysommer/sanic-cors
- https://github.com/ashleysommer/sanic-cors/blob/master/sanic_cors/core.py
- https://github.com/npbhatter17/security-advisories/blob/main/CVE-2026-37737-sani
- https://pypi.org/project/Sanic-Cors/
FAQ
What is CVE-2026-37737?
CVE-2026-37737 is a vulnerability with a CVSS score of 6.5 (MEDIUM). sanic-cors version 2.2.0 and prior contains an improper regular expression in the try_match() function in sanic_cors/core.py that uses re.match without end-anchoring. This allows an attacker to bypass...
How severe is CVE-2026-37737?
CVE-2026-37737 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-37737?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.