Advisory Details

February 25th, 2025

PostHog ClickHouse Table Functions SQL Injection Remote Code Execution Vulnerability

CVE ID	CVE-2025-1520
CVSS SCORE	7.1, AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	PostHog
AFFECTED PRODUCTS	PostHog
VULNERABILITY DETAILS	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.
ADDITIONAL DETAILS	PostHog has issued an update to correct this vulnerability. More details can be found at: https://github.com/PostHog/posthog/commit/6e8f035f9acd339c5ba87ba6ea40fc1ab3053d42
DISCLOSURE TIMELINE	2024-10-03 - Vulnerability reported to vendor 2025-02-25 - Coordinated public release of advisory 2025-02-25 - Advisory Updated
CREDIT	Mehmet INCE (@mdisec) from PRODAFT.com

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