http4s before versions 0.18.26, 0.20.20, and 0.21.2 has a local file inclusion vulnerability. This vulnerability applies to all users of org.http4s.server.staticcontent.FileService, org.http4s.server.staticcontent.ResourceService and org.http4s.server.staticcontent.WebjarService. URI normalization is applied incorrectly. Requests whose path info contain ../ or // can expose resources outside of the configured location. This issue is patched in versions 0.18.26, 0.20.20, and 0.21.2. Note that 0.19.0 is a deprecated release and has never been supported.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| org.http4s:http4s-server_2.12(Maven) | 0 | 0.18.26 | N/A |
| org.http4s:http4s-server_2.12(Maven) | 0.19.0 | 0.20.20 | N/A |
| org.http4s:http4s-server_2.12(Maven) | 0.21.0 | 0.21.2 | N/A |
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