VulnerabilityAnalyzed

CVE-2025-1520

PostHog ClickHouse Table Functions SQL Injection Remote Code Execution Vulnerability.

HIGH 8.0EPSS 0.46%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 8.0 HIGHCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.46% probability · 38th percentile
CISA KEV: Not listed
Weakness: CWE-89
Affected: posthog/posthog
Source: zdi-disclosures@trendmicro.com

References

https://github.com/PostHog/posthog/commit/6e8f035f9acd339c5ba87ba6ea40fc1ab3053d42Patch
https://www.zerodayinitiative.com/advisories/ZDI-25-099/Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.