Frappe Builder versions 1.33.0 before 1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy.
History

Sun, 08 Nov 2026 14:15:00 +0000

Type Values Removed Values Added
Description Frappe Builder versions 1.33.0 before1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy. Frappe Builder versions 1.33.0 before 1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy.

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-425
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 26 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
Description Frappe Builder versions 1.33.0 before1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy.
Title Frappe Builder 1.33.0 before 1.36.0 Missing Authorization via improve_prompt
First Time appeared Frappe
Frappe builder
Weaknesses CWE-862
CPEs cpe:2.3:a:frappe:builder:*:*:*:*:*:*:*:*
Vendors & Products Frappe
Frappe builder
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-26T11:40:00.956Z

Updated: 2026-11-08T14:00:57.693Z

Reserved: 2026-10-23T11:13:54.116Z

Link: CVE-2026-115718

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-26T12:17:05.387

Modified: 2026-11-08T14:18:05.330

Link: CVE-2026-115718

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-26T11:40:00Z

Links: CVE-2026-115718 - Bugzilla