VULNERABILITY INTELLIGENCE
CVE-2020-26217
CVSS score8 HIGH
EPSS probability82.72%
CISA KEVNot currently listed
Published2020-11-16
Last modified2026-10-07
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Description
XStream before version 1.4.14 is vulnerable to Remote Code Execution.The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. Only users who rely on blocklists are affected. Anyone using XStream's Security Framework allowlist is not affected. The linked advisory provides code workarounds for users who cannot upgrade. The issue is fixed in version 1.4.14.
Weakness classification
- security-advisories@github.com: CWE-78
- nvd@nist.gov: CWE-78
Primary references
- security-advisories@github.com — Patch, Third Party Advisory
- security-advisories@github.com — Mitigation, Third Party Advisory
- security-advisories@github.com — Issue Tracking, Mailing List
- security-advisories@github.com — Issue Tracking, Mailing List
- security-advisories@github.com — Issue Tracking, Mailing List
- security-advisories@github.com — Issue Tracking, Mailing List
- security-advisories@github.com — Mailing List, Third Party Advisory
- security-advisories@github.com — Third Party Advisory
- security-advisories@github.com — Third Party Advisory
- security-advisories@github.com — Patch, Third Party Advisory
- security-advisories@github.com — Patch, Third Party Advisory
- security-advisories@github.com — Not Applicable, Third Party Advisory