Vulnerability · Published Oct 23, 2026 · Assigned by GitHub_M
CVE-2026-86055Part-DB: Password Reset Link Poisoning via Host Header Injection leads to pre-authentication Account Takeover
High 8.7
In plain English
A high-severity security flaw in Part-DB-server from Part-DB. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Part-DB | Part-DB-server | < 2.13.3 |
Weakness: CWE-640 · 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
References
- https://github.com/Part-DB/Part-DB-server/security/advisories/GHSA-m9rf-69wp-c56r x_refsource_CONFIRM
- https://github.com/Part-DB/Part-DB-server/releases/tag/v2.13.3 x_refsource_MISC