SB2025022607 - Multiple vulnerabilities in PostHog

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) SQL injection (CVE-ID: CVE-2025-1520)

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data within the implementation of the SQL parser. A remote user on the local network can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

2) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2025-1522)

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the implementation of the database_schema method. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

3) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2025-1521)

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the processing of the slack_incoming_webhook parameter. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Remediation

Install update from vendor's website.

References

• https://www.zerodayinitiative.com/advisories/ZDI-25-099/
• https://www.zerodayinitiative.com/advisories/ZDI-25-097/
• https://www.zerodayinitiative.com/advisories/ZDI-25-096/