CVE-2021-21341
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is vulnerability which 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. 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.
- CVSS 3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 78% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-502, CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:activemq
- apache:jmeter
- debian:debian_linux
- fedoraproject:fedora
- netapp:oncommand_insight
- oracle:banking_enterprise_default_management
- oracle:banking_platform
- oracle:business_activity_monitoring
- oracle:communications_billing_and_revenue_management_elastic_charging_engine
- oracle:communications_unified_inventory_management
- oracle:retail_xstore_point_of_service
- oracle:webcenter_portal
- xstream:xstream
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-2p3x-qw9c-25hh | Maven | com.thoughtworks.xstream:xstream | <1.4.16 | 1.4.16 |
References
- http://x-stream.github.io/changes.html#1.4.16
- https://github.com/x-stream/xstream/security/advisories/GHSA-2p3x-qw9c-25hh
- https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E
- https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html