Part-DB: Password Reset Link Poisoning via Host Header Injection leads to pre-authentication Account Takeover
CVSS score
8.7
EPSS probability
—
Risk score
0.9
Published
2 h ago
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Impact on My Inventory
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%53
Short explanation
In Part-DB versions prior to 2.13.3, the password‑reset email URL is built from the client‑supplied HTTP Host header. When an unauthenticated attacker submits a forgot‑password request for a known account with a spoofed Host header, the generated reset link contains an attacker‑controlled hostname while still embedding the legitimate reset token. The victim opening the link (or an automated mail scanner dereferencing it) leaks the token, which the attacker replays against the real instance to set a new password and take over the account, resulting in pre‑authentication administrative takeover. (S0)
The flaw enables an attacker to obtain full administrative privileges without authenticating, and can be triggered by automated email scanners.
What should be done?
- Upgrade to version 2.13.3 or later (if available)
- Implement Host header validation to allow only trusted domains
- Ensure reset tokens are single‑use and have short lifetimes
- Detect forged Host requests via firewall and monitoring
- Monitor vendor advisories as patch status is currently uncertain
The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.
Chain of evidence and sources
Host başlığı doğrulaması eksikliği, saldırganın kontrolündeki alan adıyla geçerli bir şifre sıfırlama tokenı içeren bağlantı oluşturmasını sağlar (S0)
Bu token, kurbanın e‑posta istemcisi veya otomatik tarayıcı tarafından açıldığında saldırgana sızar ve aynı token gerçek sunucuda yeniden kullanılarak yönetici hesabı ele geçirilir (S0)
Show the technical text from the sources
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.
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE: CWE-640
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-86055 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Part-DB | Part-DB-server | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.7 | CVSS V4_0 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CVE CNA |
| 8.7 | CVSS V40 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-86055 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-86055 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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