GitHub Advisoryadvisory · PyPI

GHSA-94jw-hqvj-vw74 sanic-cors contains an improper regular expression in the try_match() function

MEDIUM Published 2026-06-05 Modified 2026-07-17 Official page ↗
Aliases
CVE-2026-37737
Ecosystem
PyPI
Packages
sanic-cors
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weaknesses
CWE-346
Reviewed
2026-07-17

Affected packages

• PyPI sanic-cors: <= 2.2.0 (no fix yet)

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.

Related

Alias · CVE (1)

  • 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… vulnerability

Weakness · CWE (1)

  • CWE-346 Origin Validation Error weakness

References