CVE-2025-1520: PostHog Plugin Server SQL Injection Vulnerability
Summary
CVE-2025-1520: PostHog Plugin Server SQL Injection Vulnerability. Affects @posthog/plugin-server versions < 1.10.7. No fix is published. How to fix ↓
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Background
PostHog is an open-source analytics platform designed to help product teams understand user behavior and improve their products. The PostHog Plugin Server allows users to extend the platform's functionality through plugins. However, a critical SQL injection vulnerability has been identified in the plugin server, which could allow attackers to execute arbitrary code on affected installations.
Vulnerability Detail
The vulnerability arises from a flaw in the SQL parser implementation within the PostHog Plugin Server. It lacks proper validation of user-supplied strings before they are used to construct SQL queries. This oversight enables network-adjacent attackers, who have authenticated access, to exploit the vulnerability and execute arbitrary code in the context of the database account. The ramifications of this vulnerability are severe, as it could lead to unauthorized access to sensitive data or complete system compromise.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, consider restricting access to the PostHog Plugin Server to trusted networks only, thereby minimizing the risk of exploitation until the package can be updated.
Conclusion
The PostHog Plugin Server SQL injection vulnerability (CVE-2025-1520) poses a significant risk to installations that have not been updated. It is crucial to apply the necessary updates to mitigate the risk of exploitation. By following the outlined steps, users can secure their systems and protect sensitive data.
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FAQ
SQL injection is a code injection technique that exploits vulnerabilities in an application's software by allowing attackers to manipulate SQL queries, potentially leading to unauthorized access or data manipulation.
Network-adjacent attackers who have authenticated access to the PostHog Plugin Server can exploit this vulnerability.
The consequences can include unauthorized access to sensitive data, data loss, or complete system compromise, depending on the attacker's intentions.
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The CVSS score of this vulnerability is 7.1, indicating a high severity level.
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