CVE•Published 2021-03-23•Modified 2026-10-07•1 article on news•4 live references•NVD data

CVE-2021-21348Netapp · Oncommand_insight

Vulnerability data via NVD (ingested)

CVSS v3.1
5.3
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS percentile
96
Exploit Prediction Scoring System · top 4% of all CVEs
Description

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 occupy a thread that consumes maximum CPU time and will never return. 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.

Timeline
Published 2021-03-23
Modified 2026-10-07

External references

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

More intel sources (5)

Known PoCs on GitHub

No public proof-of-concept repositories found for CVE-2021-21348 on GitHub.