CVE Catalog

CVE-2021-39141

HighCVSS 8.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Very high risk
16.12%

97th percentile - higher than 97% of all known CVEs

Summary

Vulnerability in XStream in affected versions allows a remote attacker to load and execute arbitrary code from a remote host by manipulating the processed input stream. Users following the whitelist recommendation are not affected.

Risk Assessment

An attacker can execute arbitrary code on the server, potentially leading to full system compromise and data integrity breach.

Recommendation

Upgrade XStream to version 1.4.18 or later, which no longer uses a default blacklist. Configure the security framework with a whitelist limited to minimal required types.

Other vulnerabilities in XStream

See all
Original NVD description (English source)

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability 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. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

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