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CVE-2024-9710: PostHog database_schema Server-Side Request Forgery Information Disclosure Vulnerability

• Severity: high (CVSS 8.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-22 · updated 2026-06-17
• Weakness: CWE-918

Description

PostHog database_schema Server-Side Request Forgery Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PostHog. Authentication is required to exploit this vulnerability. The specific flaw exists within the implementation of the database_schema method. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-25351.

Affected products

• PostHog: before 2024-10-04 — fixed in 2024-10-04

How to fix

Upgrade to a fixed version: PostHog 2024-10-04. Check the vendor advisory for mitigations.

References

• https://github.com/PostHog/posthog/pull/25388
• https://www.zerodayinitiative.com/advisories/ZDI-24-1383/

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