CVE-2021-29505
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CVSS Score
V3.1EPSS Score
v2025.03.14There is a 90.8% chance that this vulnerability will be exploited in the wild within the next 30 days.
Attack Vector Metrics
Impact Metrics
Description
XStream is software for serializing Java objects to XML and back again. A vulnerability in XStream versions prior to 1.4.17 may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types is affected. The vulnerability is patched in version 1.4.17.
Available Exploits
XStream <1.4.17 - Remote Code Execution
XStream before 1.4.17 is susceptible to remote code execution. An attacker can execute commands of the host by manipulating the processed input stream, thereby making it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
References:
- https://paper.seebug.org/1543/
- https://github.com/vulhub/vulhub/blob/master/xstream/CVE-2021-29505/README.zh-cn.md
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29505
- https://github.com/x-stream/xstream/security/advisories/GHSA-7chv-rrw6-w6fc
- https://nvd.nist.gov/vuln/detail/cve-2021-29505
Related News
GitHub Security Advisories
Community-driven vulnerability intelligence from GitHub
XStream is vulnerable to a Remote Command Execution attack
GHSA-7chv-rrw6-w6fcAdvisory Details
Affected Packages
CVSS Scoring
CVSS Score
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
Advisory provided by GitHub Security Advisory Database. Published: May 18, 2021, Modified: May 30, 2025