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TI-2026-79546 Aliases CVE-2026-86055

Password reset link poisoning in Part-DB allows account takeover

Priority HIGH 79CWE-640Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-640.

Summary

Part-DB-server before 2.13.3 builds password reset links from the client-supplied Host header without validation. An unauthenticated attacker can send a spoofed Host header in a forgot-password request so the reset email points to an attacker-controlled host (CWE-640). When the victim or a mail scanner opens the link, the attacker obtains the valid token and takes over the account, including the seeded admin account.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Part-DB is an open source inventory management system for electronic components. Prior to version 2.13.3, Part-DB builds the absolute URL of the password-reset link it emails to a user from the client-supplied HTTP Host header, with no trusted-host validation. An unauthenticated attacker who submits a forgot-password request for a known account while sending a spoofed Host header causes Part-DB to email that account a reset link whose hostname is attacker-controlled, while still embedding the genuine reset token. When the victim opens the link (or an automated inbound mail-security scanner dereferences it), the valid token is disclosed to the attacker, who replays it against the real instance to set a new password and take over the account. Because the seeded admin account can be targeted, this yields full pre-authentication administrative account takeover. This issue has been patched in version 2.13.3.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00591 48th percentileScored 2026-11-07
Fix Fixed Part-DB-server (Part-DB): 2.13.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Part-DBPart-DB-serverbefore 2.13.32.13.3Patch availableCNA
  • Part-DB-server VendorPart-DB Affected before 2.13.3 Fixed in 2.13.3 Patch available CNA

Remediation

Upgrade Part-DB-server to version 2.13.3, which fixes the issue. Versions before 2.13.3 are affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Part-DB-server (Part-DB) Fixed in 2.13.3

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-86055
  2. 2026-10-23 Priority changed: MEDIUM → LOW
  3. 2026-10-29 CISA SSVC decision points changed
  4. 2026-10-29 Priority changed: LOW → HIGH

References

Other 2

  • TI-2019-15485 Part-DB 0.4 Authentication Bypass via login.php CVSS 4.0HIGH 8.8
  • TI-2026-79538 Part-DB attachment upload allows PHP execution via .phar files CVSS 3.1CRITICAL 9.6
  • TI-2022-00754 OS Command Injection in part-db/part-db CVSS 3.1CRITICAL 9.8
  • TI-2026-79539 Hardcoded APP_SECRET in Part-DB enables forged login cookies CVSS 3.1MEDIUM 6.3
  • TI-2026-79540 Stored HTML injection in Part-DB BOM validation results CVSS 4.0MEDIUM 5.7
  • TI-2025-34870 Part-DB Persistent Denial of Service via Uncaught Exception from Misleading File Extension in Avatar Upload CVSS 3.1MEDIUM 5.7
See all 12 →

Sources

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