Vulnerability Description
Http4s is a minimal, idiomatic Scala interface for HTTP services. In http4s versions 0.21.26 and prior, 0.22.0 through 0.22.2, 0.23.0, 0.23.1, and 1.0.0-M1 through 1.0.0-M24, the default CORS configuration is vulnerable to an origin reflection attack. The middleware is also susceptible to a Null Origin Attack. The problem is fixed in 0.21.27, 0.22.3, 0.23.2, and 1.0.0-M25. The original `CORS` implementation and `CORSConfig` are deprecated. See the GitHub GHSA for more information, including code examples and workarounds.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Typelevel | Http4S | <= 0.21.26 |
Related Weaknesses (CWE)
References
- https://github.com/http4s/http4s/releases/tag/v0.23.2Third Party Advisory
- https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6PatchThird Party Advisory
- https://github.com/http4s/http4s/releases/tag/v0.23.2Third Party Advisory
- https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6PatchThird Party Advisory
FAQ
What is CVE-2021-39185?
CVE-2021-39185 is a vulnerability with a CVSS score of 9.1 (CRITICAL). Http4s is a minimal, idiomatic Scala interface for HTTP services. In http4s versions 0.21.26 and prior, 0.22.0 through 0.22.2, 0.23.0, 0.23.1, and 1.0.0-M1 through 1.0.0-M24, the default CORS configur...
How severe is CVE-2021-39185?
CVE-2021-39185 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-39185?
Check the references section above for vendor advisories and patch information. Affected products include: Typelevel Http4S.