Read the docs
TI-2025-01309 Aliases CVE-2025-1522GHSA-55cg-p3v8-2vr3

Server-side request forgery in PostHog

Priority LOW 30CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

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 disclose information in the context of the service account. Was ZDI-CAN-25358.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00641 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PostHogPostHogb8817c14065c23159dcf52849f0bdcd12516c43e—No fix listedCNA
  • PostHog VendorPostHog Affected b8817c14065c23159dcf52849f0bdcd12516c43e Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:posthog:posthog:*:*:*:*:*:*:*:*before 0.3.7VulnerablePostHog
  • cpe:2.3:a:posthog:posthog:*:*:*:*:*:*:*:* Versions before 0.3.7 Vulnerable ·PostHog

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-1522
  2. 2026-10-03 Alias added: GHSA-55cg-p3v8-2vr3
  3. 2026-10-24 EPSS moved to the 50th–90th percentile

References

Patch 1

Advisory 1

  • TI-2025-01307 SQL injection in PostHog CVSS 3.1HIGH 8.0
  • TI-2024-09007 Server-side request forgery in PostHog CVSS 3.1HIGH 8.3
  • TI-2025-01308 Server-side request forgery in PostHog CVSS 3.1MEDIUM 6.5
  • TI-2022-00561 Open redirect vulnerability via endpoint authorize_and_redirect/?redirect= in posthog/posthog CVSS 3.1MEDIUM 6.1
  • TI-2023-25229 Authenticated PostHog users vulnerable to SSRF CVSS 3.1MEDIUM 4.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences