CVE-2026-37737
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductSanic-cors
PublishedJun 5, 2026
First seenJun 5, 2026
Weakness typeCWE-625CWE-625CWE-346CWE-346
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sanic-corsPyPI | v ≤ 2.2.0 | — |
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