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.

INFO

Published Date :

2025-04-23T16:45:32.855Z

Last Modified :

2025-04-23T18:10:39.906Z

Source :

zdi
AFFECTED PRODUCTS

The following products are affected by CVE-2025-1521 vulnerability.

Vendors Products
Posthog
  • Posthog
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-1521.

URL Resource
https://github.com/PostHog/posthog/commit/6e8f035f9acd339c5ba87ba6ea40fc1ab3053d42 cve-icon cve-icon
https://www.zerodayinitiative.com/advisories/ZDI-25-096/ cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact