Org.http4s vulnerabilities
We track 2 vulnerabilities in Org.http4s products across 6 products. 2 are rated high or critical, and none are known to be exploited. The most recent was published on September 14, 2026.
2vulnerabilities
0critical
2high
0exploited
7.8average CVSS score
Latest Org.http4s vulnerabilities
- 7.4 High severity
blaze: Inconsistent Interpretation of HTTP Requests
blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. Prior to 0.23.18 and from 1.0.0-M1 until 1.0.0-M42, five HTTP/1.1 conformance laxities in the hand-written Java parser under http/src/main/java/org/http4s/blaze/http/pars
- 8.2 High severity
http4s: Improper Handling of Highly Compressed Data (Data Amplification)
Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, an unauthenticated HTTP/2 peer can cause an out-of-memory denial of service in the Ember backend with HTTP/2 enabled. The Hpack wrapper in ember-core/shared/src/main/scala/org/http4