{"id":"CVE-2026-115720","title":"Frappe Builder before 1.36.1 SSRF Guard Bypass via HTTP Redirect","summary":"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 redirec…","severity":"medium","cvss":5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-918"],"vendor":"frappe","product":"builder","affected":["builder >= 1.0.0 < 1.36.1"],"published":"2026-10-26","updated":"2026-10-26","sourceUpdated":"2026-10-26T12:02:25.906Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115720","references":[{"url":"https://github.com/frappe/builder/releases/tag/v1.36.1","label":"Vendor Patch"},{"url":"https://github.com/frappe/builder/security/advisories/GHSA-hvrf-fhv3-3v7p","label":"Vendor Advisory"},{"url":"https://www.vulncheck.com/advisories/frappe-builder-before-ssrf-guard-bypass-via-http-redirect","label":"VulnCheck Advisory: Frappe Builder before 1.36.1 SSRF Guard Bypass via HTTP Redirect"}],"tags":["cve.org"],"ingestedAt":"2026-10-26T12:26:18.476Z","slug":"CVE-2026-115720","body":"## Overview\n\nFrappe 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.\n\n## Affected\n\n- `builder >= 1.0.0 < 1.36.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}