CVE-2018-20744

low-risk

Published 2019-01-28

The Olivier Poitrey Go CORS handler through 1.3.0 actively converts a wildcard CORS policy into reflecting an arbitrary Origin header value, which is incompatible with the CORS security design, and could lead to CORS misconfiguration security problems.

Do I need to act?

0.15% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.9/10 Medium

NETWORK / HIGH complexity

Affected Products (1)

Go Cors

Affected Vendors

Go Cors Project

References (6)

Third Party Advisory http://www.securityfocus.com/bid/106834

Issue Tracking https://github.com/rs/cors/issues/55

Third Party Advisory https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-chen.pdf

Third Party Advisory http://www.securityfocus.com/bid/106834

Issue Tracking https://github.com/rs/cors/issues/55

Third Party Advisory https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-chen.pdf

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low-risk

Severity 18/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal