VULNERABILITY INTELLIGENCE

CVE-2025-1521

CVSS score6.5 MEDIUM
EPSS probability0.67%
CISA KEVNot currently listed
Published2025-04-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Description

PostHog slack_incoming_webhook 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 processing of the slack_incoming_webhook parameter. 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-25352.

Weakness classification

  • zdi-disclosures@trendmicro.com: CWE-918

Primary references