Medium severity6.5NVD Advisory· Published Jun 5, 2026· Updated Jun 5, 2026
CVE-2026-37737
CVE-2026-37737
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
sanic-corsPyPI | <= 2.2.0 | — |
Affected products
3- Package: https://pypi.org/project/Sanic-Cors
- Range: <=2.2.0
- Range: <=2.2.0
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-94jw-hqvj-vw74ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-37737ghsaADVISORY
- github.com/ashleysommer/sanic-cors/blob/master/sanic_cors/core.pynvdWEB
- github.com/npbhatter17/security-advisories/blob/main/CVE-2026-37737-sanic-cors-advisory.mdnvdWEB
- pypi.org/project/Sanic-CorsghsaWEB
- pypi.org/project/Sanic-Cors/nvd
News mentions
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