CVE-2021-39185
- Source
- https://cve.org/CVERecord?id=CVE-2021-39185
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-39185.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-39185
- Aliases
- Published
- 2021-09-01T20:15:07Z
- Modified
- 2026-05-16T04:03:06Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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
CORSimplementation andCORSConfigare deprecated. See the GitHub GHSA for more information, including code examples and workarounds. - References