CVE-2020-26258
Server-Side Forgery Request can be activated unmarshalling with XStream
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
2Exploited in Wild
-Decision
Descriptions
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.15, a Server-Side Forgery Request vulnerability can be activated when unmarshalling. The vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.15. The reported vulnerability does not exist if running Java 15 or higher. No user is affected who followed the recommendation to setup XStream's Security Framework with a whitelist! Anyone relying on XStream's default blacklist can immediately switch to a whilelist for the allowed types to avoid the vulnerability. Users of XStream 1.4.14 or below who still want to use XStream default blacklist can use a workaround described in more detailed in the referenced advisories.
XStream es una biblioteca de Java para serializar objetos a XML y viceversa. En XStream versiones anteriores a 1.4.15, puede ser activada una vulnerabilidad de tipo Server-Side Forgery Request al desagrupar. La vulnerabilidad puede permitir a un atacante remoto solicitar datos de recursos internos que no están disponibles públicamente solo mediante la manipulación del flujo de entrada procesado. Si confía en la lista negra predeterminada de XStream del Security Framework, tendrá que usar al menos la versión 1.4.15. La vulnerabilidad reportada no existe si se ejecuta Java versión 15 o superior. Ningún usuario es afectado si siguió la recomendación de configurar el Security Framework de XStream con una lista blanca! Cualquiera que confíe en la lista negra predeterminada de XStream puede cambiar inmediatamente a una lista blanca para los tipos permitidos para evitar la vulnerabilidad. Usuarios de XStream 1.4 o por debajo, quienes aún quieran usar la lista negra predeterminada de XStream pueden usar una solución alternativa que se describe con más detalle en los avisos a los que se hace referencia
Red Hat Decision Manager is an open source decision management platform that combines business rules management, complex event processing, Decision Model & Notation execution, and Business Optimizer for solving planning problems. It automates business decisions and makes that logic available to the entire business. This release of Red Hat Decision Manager 7.11.0 serves as an update to Red Hat Decision Manager 7.10.1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include XML injection, code execution, denial of service, and server-side request forgery vulnerabilities.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-10-01 CVE Reserved
- 2020-12-16 CVE Published
- 2021-01-22 First Exploit
- 2025-01-15 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-918: Server-Side Request Forgery (SSRF)
CAPEC
References (16)
URL | Date | SRC |
---|---|---|
https://github.com/Al1ex/CVE-2020-26258 | 2021-01-22 | |
https://x-stream.github.io/CVE-2020-26258.html | 2025-01-15 |
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2020-26258 | 2021-11-23 | |
https://bugzilla.redhat.com/show_bug.cgi?id=1908832 | 2021-11-23 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Xstream Project Search vendor "Xstream Project" | Xstream Search vendor "Xstream Project" for product "Xstream" | < 1.4.15 Search vendor "Xstream Project" for product "Xstream" and version " < 1.4.15" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 35 Search vendor "Fedoraproject" for product "Fedora" and version "35" | - |
Affected
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