CVE-2021-39152 — A Server-Side Forgery Request vulnerability in XStream via HashMap unmarshaling
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resourc…
Published: 2021-08-23 · CVSS: 8.5 · CVSS 3.1
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. 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](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7