CVE-2025-1520

High

Description

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. Was ZDI-CAN-25350.

SeverityHigh

CVSS8.0

Exploit probability—

Product

Posthog

PublishedApr 23, 2025

First seenApr 23, 2025

Weakness typeCWE-89SQL injection

How to fix

Update

posthog posthog0.3.7 or later

Vendor advisories

github.com/PostHog/posthog/commit/6e8f035f9acd339c5ba87ba6ea40fc1ab3053d42

Affected products

Product	Affected versions	Fixed in
posthog posthog	v < 0.3.7	0.3.7
@posthog/plugin-servernpm	v ≤ 1.10.7	—

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