What is CVE-2026-37737?

CVE-2026-37737 is a medium-severity vulnerability, classified under Origin Validation Error. CVSS score: 6.5/10. Published 2026-06-05.

How severe is CVE-2026-37737?

Medium severity. CVSS v3 base score is 6.5 out of 10.

CVE-2026-37737

CVE-2026-37737

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…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Weakness classification (CWE)

CWE-346 — Origin Validation Error
CWE-625

References

cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-37737?: CVE-2026-37737 is a medium-severity vulnerability, classified under Origin Validation Error. CVSS score: 6.5/10. Published 2026-06-05.
How severe is CVE-2026-37737?: Medium severity. CVSS v3 base score is 6.5 out of 10.