CVE Catalog

CVE-2021-21344

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Very high risk
75.98%

100th percentile - higher than 100% of all known CVEs

Summary

XStream before 1.4.16 contains a vulnerability allowing a remote attacker to load and execute arbitrary code from a remote host by manipulating the processed input stream. Users with a whitelist of minimal types are not affected.

Risk Assessment

An attacker can execute arbitrary code on the server, taking control of the application. This can lead to full system compromise.

Recommendation

Update XStream to at least version 1.4.16. If using the default blacklist, switch to a whitelist of allowed types.

Other vulnerabilities in XStream

See all
Original NVD description (English source)

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 to load and execute arbitrary code from a remote 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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS