CVE-2020-26217

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.

• CWE-78
• CWE-78

• https://github.com/x-stream/xstream/commit/0fec095d534126931c99fd38e9c6d41f5c685c1aPatch, Third Party Advisory
• https://github.com/x-stream/xstream/security/advisories/GHSA-mw36-7c6c-q4q2Mitigation, Third Party Advisory
• https://lists.apache.org/thread.html/r2de526726e7f4db4a7cb91b7355070779f51a84fd985c6529c2f4e9e%40%3Cissues.activemq.apache.org%3EIssue Tracking, Mailing List
• https://lists.apache.org/thread.html/r7c9fc255edc0b9cd9567093d131f6d33fde4c662aaf912460ef630e9%40%3Ccommits.camel.apache.org%3EIssue Tracking, Mailing List
• https://lists.apache.org/thread.html/r826a006fda71cc96fc87b6eca4b5d195f19a292ad36cea501682c38c%40%3Cissues.activemq.apache.org%3EIssue Tracking, Mailing List
• https://lists.apache.org/thread.html/redde3609b89b2a4ff18b536a06ef9a77deb93d47fda8ed28086fa8c3%40%3Cissues.activemq.apache.org%3EIssue Tracking, Mailing List
• https://lists.debian.org/debian-lts-announce/2020/12/msg00001.htmlMailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210409-0004/Third Party Advisory
• https://www.debian.org/security/2020/dsa-4811Third Party Advisory
• https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2022.htmlNot Applicable, Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2022.htmlNot Applicable, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
• https://x-stream.github.io/CVE-2020-26217.htmlExploit, Mitigation, Vendor Advisory
• https://github.com/x-stream/xstream/commit/0fec095d534126931c99fd38e9c6d41f5c685c1aPatch, Third Party Advisory
• https://github.com/x-stream/xstream/security/advisories/GHSA-mw36-7c6c-q4q2Mitigation, Third Party Advisory
• https://lists.apache.org/thread.html/r2de526726e7f4db4a7cb91b7355070779f51a84fd985c6529c2f4e9e%40%3Cissues.activemq.apache.org%3EIssue Tracking, Mailing List
• https://lists.apache.org/thread.html/r7c9fc255edc0b9cd9567093d131f6d33fde4c662aaf912460ef630e9%40%3Ccommits.camel.apache.org%3EIssue Tracking, Mailing List
• https://lists.apache.org/thread.html/r826a006fda71cc96fc87b6eca4b5d195f19a292ad36cea501682c38c%40%3Cissues.activemq.apache.org%3EIssue Tracking, Mailing List
• https://lists.apache.org/thread.html/redde3609b89b2a4ff18b536a06ef9a77deb93d47fda8ed28086fa8c3%40%3Cissues.activemq.apache.org%3EIssue Tracking, Mailing List
• https://lists.debian.org/debian-lts-announce/2020/12/msg00001.htmlMailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210409-0004/Third Party Advisory
• https://www.debian.org/security/2020/dsa-4811Third Party Advisory
• https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2022.htmlNot Applicable, Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2022.htmlNot Applicable, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
• https://x-stream.github.io/CVE-2020-26217.htmlExploit, Mitigation, Vendor Advisory

Published

Nov 16, 2020

Last Modified

Jun 17, 2026

Status

Analyzed