CVE-2023-37259
6.1 · MEDIUMOverview
CVE-2023-37259 is a medium-severity vulnerability affecting matrix-react-sdk_project matrix-react-sdk. It was published on July 18, 2023 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
matrix-react-sdk is a react-based SDK for inserting a Matrix chat/voip client into a web page. The Export Chat feature includes certain attacker-controlled elements in the generated document without sufficient escaping, leading to stored Cross site scripting (XSS). Since the Export Chat feature generates a separate document, an attacker can only inject code run from the `null` origin, restricting the impact. However, the attacker can still potentially use the XSS to leak message contents. A malicious homeserver is a potential attacker since the affected inputs are controllable server-side. This issue has been addressed in commit `22fcd34c60` which is included in release version 3.76.0. Users are advised to upgrade. The only known workaround for this issue is to disable or to not use the Export Chat feature.
Remediation
Check the references section for vendor advisories and patches from matrix-react-sdk_project. Update matrix-react-sdk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| matrix-react-sdk_project | matrix-react-sdk | >= 3.32.0, < 3.76.0 | Affected |
References
Frequently Asked Questions
What is CVE-2023-37259?
CVE-2023-37259 is a medium-severity vulnerability affecting matrix-react-sdk_project matrix-react-sdk. It was published on July 18, 2023 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
How severe is CVE-2023-37259?
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2023-37259?
Check the references section for vendor advisories and patches from matrix-react-sdk_project. Update matrix-react-sdk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-37259?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-37259 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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