ashleysommer/sanic-cors · Security
sanic-cors contains an improper regular expression in the try_match() function
- GHSA ID
- GHSA-94jw-hqvj-vw74
- CVE ID
- CVE-2026-37737
- Severity
- medium
- Published
- Updated
- CVSS
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- CVSS v3
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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.
CWEs
- CWE-346 · Origin Validation Error
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-37737 ↗
- https://github.com/ashleysommer/sanic-cors/blob/master/sanic_cors/core.py ↗
- https://github.com/npbhatter17/security-advisories/blob/main/CVE-2026-37737-sanic-cors-advisory.md ↗
- https://pypi.org/project/Sanic-Cors ↗
- https://github.com/advisories/GHSA-94jw-hqvj-vw74 ↗