S4E just found a high top 10 tcp port service scan
high·Product Based Web Vulnerabilities·Updated Feb 8, 2024

CVE-2020-26258 Scanner

Detects 'Server-Side-Request-Forgery (SSRF)' vulnerability in XStream affects v. before 1.4.15.

Est. Time~10 seconds
Scan TypeSingle Scan
Targetsdomain, ipv4, subdomain
CostFree
2.6k
Times Used
continuous scan runs
3.4k
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
CVECVE-2020-26258
7.7
CVSSmedium
Exploitable remotely over the internet · low-privilege account sufficient.

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.

Attack Vector
Network
Privileges Req.
Low
User Interaction
None
Affected
xstreamby x-stream
< 1.4.15
Updated Aug 21, 2026View on NVD →
Detail

Exploring XStream Utility and Application

XStream is a Java-based library widely utilized for the serialization and deserialization of objects to and from XML. It provides a straightforward and intuitive approach to converting Java objects into their XML representation, enabling seamless data interchange between applications and systems. With its ease of use and high-level facade, XStream simplifies the process of handling complex object hierarchies and nested structures, making it an invaluable tool for diverse Java-based projects and applications.

Understanding the CVE-2020-26258 Vulnerability

The CVE-2020-26258 vulnerability pertains to versions prior to 1.4.15 of the XStream product, where a critical Server-Side-Request-Forgery (SSRF) security flaw was identified. This vulnerability exposes an exploitable SSRF weakness, allowing malicious actors to manipulate the application's functionality and provoke unauthorized server-side requests. By leveraging this vulnerability, attackers can potentially bypass access controls, interact with internal systems, and exfiltrate sensitive data, thereby compromising the integrity and confidentiality of the application and its associated infrastructure.

Impact of CVE-2020-26258 Vulnerability Exploitation

Exploitation of the CVE-2020-26258 vulnerability in the XStream product can have severe ramifications in the hands of a malicious cyber attacker. Through SSRF manipulation, attackers can initiate unauthorized requests to internal systems, potentially leading to data breaches, service disruptions, and unauthorized access to sensitive resources. Furthermore, exploitation of this vulnerability can result in the compromise of confidential information, undermining the trust and reliability of the application and its ecosystem.

Encouraging Platform Utilization for Enhanced Security

For those who have yet to engage with the platform, embracing the services of S4E offers proactive defense against vulnerabilities such as CVE-2020-26258. By leveraging the continuous threat exposure management capabilities provided by the platform, organizations can bolster their security posture, detect critical vulnerabilities, and fortify their digital assets against evolving cyber threats. Joining S4E empowers businesses to stay ahead of potential exploits, mitigate risks, and sustain a resilient security framework in the face of persistent threats.

 

References

Solution Advice

You must do the following to fix the vulnerability:

  • Update the XStream product to version 1.4.15 or later to remediate the CVE-2020-26258 vulnerability.
  • Implement robust input validation and sanitization mechanisms to mitigate SSRF risks.
  • Restrict and monitor outbound network traffic to prevent unauthorized server-side requests.
  • Conduct thorough security assessments and penetration testing to identify and address potential SSRF weaknesses effectively.

Get AI-powered remediation steps tailored to your asset.

Try AI Solutions →
Similar Tools
critical
Social Warfare Remote Code Execution Scanner
→critical
CVE-2022-0826 Scanner
→critical
CVE-2020-25506 Scanner
→critical
CVE-2018-7602 Scanner
→critical
CVE-2022-38637 Scanner
→high
CVE-2022-34753 Scanner
→critical
CVE-2014-1203 Scanner
→high
CVE-2023-33440 Scanner
→

Check your infrastructure.
Right now.

11,000+ scanners. Free to start. No credit card required.

CVE-2020-26258 scanner - Server-Side-Request-Forgery (SSRF) vulnerability in XStream S4E