VULNERABILITY INTELLIGENCE

CVE-2021-21345

CVSS score5.8 MEDIUM
EPSS probability72.32%
CISA KEVNot currently listed
Published2021-03-23
Last modified2026-10-07
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:N

Description

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker who has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.

Weakness classification

  • security-advisories@github.com: CWE-94
  • nvd@nist.gov: CWE-78

Primary references