CVE-2026-115720

Frappe Builder before 1.36.1 contains a server-side request forgery vulnerability in builder/api.py where the assert_not_private_url() guard validates only the initial hostname before callers invoke requests.get(url) with default redirect-following and no IP pinning, allowing an attacker-supplied public URL to HTTP-redirect to internal or link-local addresses the guard never validated. An authenticated attacker can call the convert_to_webp endpoint, which lacks a permission decorator, with a URL that redirects to internal targets such as cloud metadata services to perform SSRF, internal port scanning, or trigger a request-hang denial of service due to the missing timeout.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/frappe/builder/releases/tag/v1.36.1
https://github.com/frappe/builder/security/advisories/GHSA-hvrf-fhv3-3v7p
https://www.vulncheck.com/advisories/frappe-builder-before-ssrf-guard-bypass-via-http-redirect

Configurations

No configuration.

History

26 Oct 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-26 12:17

Updated : 2026-10-26 20:17

NVD link : CVE-2026-115720

Mitre link : CVE-2026-115720

CVE.ORG link : CVE-2026-115720

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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