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TI-2026-85179 Aliases CVE-2026-122138GHSA-3x4w-vq7f-5f76

Login rate limit bypass in BlueprintUE Self-Hosted Edition

Priority LOW 28CWE-307Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-307.

Summary

BlueprintUE Self-Hosted Edition from 4.2.0 before 4.3.4 contains a login rate limit bypass in LoginMiddleware.php, which keys failed-login counters on case-sensitive usernames. An unauthenticated remote attacker can vary username casing against case-insensitive MySQL lookups to get extra attempts and brute-force passwords past the per-account lockout, related to CWE-307.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 contains a login rate limit bypass vulnerability in LoginMiddleware.php that keys failed-login counters on case-sensitive usernames. Unauthenticated attackers can vary username casing against case-insensitive MySQL lookups to get extra attempts and brute-force passwords past the per-account lockout.

Why it matters now

EPSS 0.00331 26th percentileScored 2026-11-07
Fix Fixed blueprintue-self-hosted-edition (blueprintue): 4.3.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
blueprintueblueprintue-self-hosted-edition4.2.0 to before 4.3.44.3.4Patch availableCNA
  • blueprintue-self-hosted-edition Vendorblueprintue Affected 4.2.0 to before 4.3.4 Fixed in 4.3.4 Patch available CNA

Remediation

Upgrade BlueprintUE Self-Hosted Edition to version 4.3.4 or later, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA blueprintue-self-hosted-edition (blueprintue) Fixed in 4.3.4

Timeline

  1. 2026-11-04 Threatist record created from CVE-2026-122138
  2. 2026-11-04 Alias added: GHSA-3x4w-vq7f-5f76
  3. 2026-11-06 Priority changed: MEDIUM → LOW

References

Patch 2

Advisory 1

Other 2

  • TI-2026-29322 blueprintUE: Login Endpoint Has No Rate Limiting, Lockout, or Brute-Force Protection CVSS 3.1HIGH 7.5
  • TI-2026-29324 blueprintUE: Authenticated Password Change Does Not Verify Current Password CVSS 3.1HIGH 8.1
  • TI-2026-29321 blueprintUE: Password Reset Tokens Have No Expiry Window CVSS 3.1HIGH 7.4
  • TI-2026-29323 blueprintUE: Active Sessions Are Not Invalidated After Password Change or Reset CVSS 3.1MEDIUM 6.5
  • TI-2026-85180 Account enumeration via password reset in blueprintUE Self-Hosted Edition CVSS 4.0MEDIUM 6.9
  • TI-2026-84856 Stale confirmation tokens activate accounts in blueprintUE Self-Hosted Edition CVSS 4.0MEDIUM 6.3

Sources

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