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TI-2026-71912 Aliases CVE-2026-66057

Open redirect in Frappe OAuth login flow

Priority LOW 23CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Spoofing
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-601.

Summary

Frappe versions before 15.116.0 and from 16.0.0 before 16.29.0 are affected. The OAuth login flow uses a client-supplied state parameter, without sanitizing it, to choose where the user goes after authentication, which is an open redirect (CWE-601). An unauthenticated remote attacker can craft a state value that redirects a user to an attacker-chosen location, but the user must interact with the crafted login flow.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

Frappe is a full-stack web application framework. Prior to 15.116.0 and 16.29.0, the OAuth login flow uses an unsanitized client-controlled state parameter to select post-authentication navigation, allowing a crafted state value to redirect a user to an attacker-chosen location. This issue is fixed in versions 15.116.0 and 16.29.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00417 36th percentileScored 2026-11-07
Fix Fixed frappe (frappe): 15.116.0, 16.29.0

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

VendorProductAffected versionsFixed inStatusSource
frappefrappebefore 15.116.0; 16.0.0 to before 16.29.015.116.0, 16.29.0Patch availableCNA
  • frappe Vendorfrappe Affected before 15.116.0; 16.0.0 to before 16.29.0 Fixed in 15.116.0, 16.29.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:frappe:frappe:*:*:*:*:*:*:*:*——frappe
  • cpe:2.3:a:frappe:frappe:*:*:*:*:*:*:*:* Versions — — ·frappe

Remediation

Update Frappe to version 15.116.0 in the 15.x branch or version 16.29.0 in the 16.x branch.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

  • Fix · CNA frappe (frappe) Fixed in 15.116.0, 16.29.0

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-66057
  2. 2026-10-14 CISA SSVC decision points changed

References

Other 7

  • 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 321 →

Sources

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