CVE-2021-43859

XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.

Affected products

Alt Linux, Jenkins, Suse, Xstream

Jenkins

< 2.319.3, 2.334

Fix

Available

CVSS 3.1

7.5 HIGH

EPSS

7.9% (94th percentile)

Weakness

CWE-400

NVD status

Modified

Published

2022-02-01

No exploit for CVE-2021-43859 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.