High (7.5) in typelevel http4s. EPSS 7.0% chance of exploitation in the next 30 days. Fixed in org.http4s:http4s-server_2.12 0.18.26, 0.20.20, 0.21.2.
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.
Severity
CVSS 3.1
7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
7.0% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)