CVE-2026-115718 Frappe Builder 1.33.0 before 1.36.0 Missing Authorization via improve_prompt

Medium 5.3 Published 26 Oct 2026 Updated 26 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-115718?

CVE-2026-115718 is a medium-severity vulnerability in frappe builder, published on 26 Oct 2026.

Official 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.

Weakness: CWE-862

Which versions are affected by CVE-2026-115718?

How do I fix CVE-2026-115718?

No fix has been published for CVE-2026-115718 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-115718 being exploited?

There is no known exploitation of CVE-2026-115718 in the wild and no public exploit code.

Sources

Also known as GHSA-58mj-c563-p78w.