Vulnerability Description
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 Score
MEDIUM
Related Weaknesses (CWE)
References
- 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
FAQ
What is CVE-2026-115720?
CVE-2026-115720 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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 r...
How severe is CVE-2026-115720?
CVE-2026-115720 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-115720?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.