TI-2026-80348 Aliases CVE-2026-115718

Missing authorization in Frappe Builder lets users consume LLM credits

LOW 24CWE-862Published 2026-10-26 · Updated 2026-10-26

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: None · None · Low
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-862.

Summary

Frappe Builder versions from 1.33.0 before 1.36.0 contain a missing authorization check (CWE-862) in the improve_prompt endpoint. Any authenticated user with a non-Guest session can call it to run LLM completions with the site owner's stored OpenRouter API key, consuming paid credits. The attacker needs low privileges and no user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00313 24th percentileScored 2026-11-07

Fix Partial builder (frappe): 1.36.0Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
frappe	builder	1.33.0 to before 1.36.0	1.36.0	Patch available	CNA

builder Vendorfrappe Affected 1.33.0 to before 1.36.0 Fixed in 1.36.0 Patch available CNA

Remediation

Upgrade Frappe Builder to 1.36.0. Red Hat Satellite 6 is affected without a fix, and Red Hat lists no plan available for it.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fix · CNA builder (frappe) Fixed in 1.36.0

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Satellite 6	Affected	No fix yet: Fix deferred

Timeline

2026-10-26 Threatist record created from CVE-2026-115718
2026-10-26 CISA SSVC decision points changed
2026-10-26 Affected versions changed · Red Hat
2026-10-26 CVSS score added · Red Hat

References

Patch 1

Vendor Patch

Advisory 1

Vendor Advisory

TI-2026-28140 ERPNext v15.103.1 and before is vulnerable to Server-Side Template Injection (SSTI). CVSS 3.1CRITICAL 9.8
TI-2025-40873 An issue was discovered in Frappe ERPNext through 15.89.0. CVSS 3.1CRITICAL 9.8
TI-2025-40872 An issue was discovered in Frappe ERPNext through 15.89.0. CVSS 3.1CRITICAL 9.8
TI-2025-40871 A Server-Side Template Injection (SSTI) vulnerability exists in the Frappe ERPNext… CVSS 3.1CRITICAL 9.8
TI-2025-32462 In Frappe ERPNext 15.57.5, the function get_rfq_containing_supplier() at… CVSS 3.1HIGH 8.2
TI-2025-32461 In Frappe ERPNext 15.57.5, the function get_stock_balance_for() at… CVSS 3.1HIGH 8.2

See all 317 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences