CVE-2017-20189

9.8 CRITICAL

Published: January 22, 2024 Modified: November 03, 2025

Description

In Clojure before 1.9.0, classes can be used to construct a serialized object that executes arbitrary code upon deserialization. This is relevant if a server deserializes untrusted objects.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://clojure.atlassian.net/browse/CLJ-2204

Source: cve@mitre.org

Exploit Patch Vendor Advisory

https://github.com/clojure/clojure/commit/271674c9b484d798484d134a5ac40a6df15d3ac3

Source: cve@mitre.org

Patch

https://github.com/frohoff/ysoserial/pull/68/files

Source: cve@mitre.org

Patch

https://hackmd.io/%40fe1w0/HyefvRQKp

Source: cve@mitre.org

Exploit Third Party Advisory

https://security.snyk.io/vuln/SNYK-JAVA-ORGCLOJURE-5740378

Source: cve@mitre.org

Patch Third Party Advisory

https://clojure.atlassian.net/browse/CLJ-2204