Vulnerability Details : CVE-2021-39185
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.
Products affected by CVE-2021-39185
- cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone1:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone10:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone17:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone18:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone19:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone20:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone21:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone22:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone11:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone12:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone13:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone14:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone15:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone16:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone2:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone3:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone4:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone5:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone6:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone7:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone8:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone9:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:0.23.0:*:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:0.23.1:*:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone23:*:*:*:*:*:*
- cpe:2.3:a:typelevel:http4s:1.0.0:milestone24:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-39185
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-39185
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:P/A:N |
10.0
|
4.9
|
NIST | |
|
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
3.9
|
5.2
|
GitHub, Inc. |
CWE ids for CVE-2021-39185
-
The product does not properly verify that the source of data or communication is valid.Assigned by: security-advisories@github.com (Primary)
References for CVE-2021-39185
-
https://github.com/http4s/http4s/releases/tag/v0.23.2
Release v0.23.2 · http4s/http4s · GitHubThird Party Advisory
-
https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6
Default CORS config allows any origin with credentials · Advisory · http4s/http4s · GitHubPatch;Third Party Advisory
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