WPBifröst – Instant Passwordless Temporary Login Links <= 1.0.7 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation
Strategic Overview
- Status
- Patched in 1.0.8
- Affected Plugin
- Bifröst – Instant Passwordless Temporary Login Links
- Affected Version
<= 1.0.7- CVSS
- 8.8High
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2025-10299
At a glance
CVE-2025-10299 is a high-severity Missing Authorization vulnerability in the Bifröst WordPress plugin, affecting versions <= 1.0.7. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 1.0.8; sites on affected versions should update now. Disclosed October 2025, reported by Jonas Benjamin Friedli.
Vulnerability Overview
The WPBifröst – Instant Passwordless Temporary Login Links plugin for WordPress is vulnerable to Privilege Escalation due to a missing capability check on the ctl_create_link AJAX action in all versions up to, and including, 1.0.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create new administrative user accounts and subsequently log in as those.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-862: Missing Authorization
Reaching this weakness in Bifröst <= 1.0.7 takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Bifröst the fix is 1.0.8: builds <= 1.0.7 are affected, anything from 1.0.8 onward is not.
Remediation
Update to version 1.0.8, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Bifröst 1.0.8 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C