CVE-2026-86055 Part-DB: Password Reset Link Poisoning via Host Header Injection leads to pre-authentication Account Takeover
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-86055?
CVE-2026-86055 is a high-severity vulnerability in Part-DB-server, published on 23 Oct 2026.
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.
Weakness: CWE-640
Which versions are affected by CVE-2026-86055?
How do I fix CVE-2026-86055?
No fix has been published for CVE-2026-86055 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-86055 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86055 exists.
Sources
Also known as GHSA-m9rf-69wp-c56r.