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CVE-2021-39144

⚠️ high
Summary

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the 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.

CVSS Score
8.5
High
EPSS Score
94.4
Exploit Probability
Published Date
2021-08-23
First Seen: 2026-01-05
Last Modified 2025-10-24
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE IDs (Weakness Types)

🔗 References 25

http://packetstormsecurity.com/files/169859/VMware-N...
Exploit Third Party Advisory VDB Entry
https://lists.fedoraproject.org/archives/list/packag...
Broken Link Mailing List Release Notes
https://lists.fedoraproject.org/archives/list/packag...
Broken Link Mailing List Release Notes
https://lists.fedoraproject.org/archives/list/packag...
Broken Link Mailing List Release Notes
http://packetstormsecurity.com/files/169859/VMware-N...
Exploit Third Party Advisory VDB Entry
https://lists.fedoraproject.org/archives/list/packag...
Broken Link Mailing List Release Notes
https://lists.fedoraproject.org/archives/list/packag...
Broken Link Mailing List Release Notes
https://lists.fedoraproject.org/archives/list/packag...
Broken Link Mailing List Release Notes

📦 Affected Products 35

💣 Public Exploits 1 PRO

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🔗 Related CVEs 6

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These CVEs affect the same products