ZDI-CAN-25350: ZDI-25-099: PostHog ClickHouse Table Functions SQL Injection Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of PostHog. Authentication is required to exploit this vulnerability. The specific flaw exists within the implementation of the SQL parser. The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to execute code in the context of the database account.
Other sources
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of PostHog. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.1. The following CVEs are assigned: CVE-2025-1520.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-25350?
ZDI-CAN-25350 has been assigned a CVSS rating of 7.1, indicating high severity.
How do I fix ZDI-CAN-25350?
To fix ZDI-CAN-25350, you should update your PostHog installation to the latest version provided by the vendor.
Who is affected by ZDI-CAN-25350?
Any installations of PostHog that are configured in a network-adjacent environment and require authentication are affected by ZDI-CAN-25350.
What type of attack can exploit ZDI-CAN-25350?
ZDI-CAN-25350 allows network-adjacent attackers to execute arbitrary code on affected installations.
Is authentication required to exploit ZDI-CAN-25350?
Yes, authentication is required to exploit the vulnerability identified as ZDI-CAN-25350.