Vulnerability in Lightbend Akka-Http

CVE-2021-23339

This affects all versions before 10.1.14 and from 10.2.0 to 10.2.4 of package com.typesafe.akka:akka-http-core. It allows multiple Transfer-Encoding headers.

Vulnerability class: HTTP Request Smuggling

EPSS: 0.007 (49.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

  • Lightbend Akka-http
  • N/a Com.typesafe.akka:akka-http-core — versions all versions before 10.1.14 and from 10.2.0 to 10.2.4

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-23339?
CVE-2021-23339 is a medium-severity vulnerability in Lightbend Akka-Http, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 5.0/10. Published 2021-02-17.
How severe is CVE-2021-23339?
Medium severity. CVSS v3 base score is 5.0 out of 10.