CVE Alert: CVE-2025-9213 – textbuilder – TextBuilder
CVE-2025-9213
The TextBuilder plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions 1.0.0 to 1.1.1. This is due to missing or incorrect nonce validation on the ‘handleToken’ function. This makes it possible for unauthenticated attackers to update a user’s authorization token via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. Once the token is updated, an attacker can update the user’s password and email address.
AI Summary Analysis
Risk verdict
High risk potential; exploitation is currently not active per SSVC, but the flaw enables unauthenticated token updates via CSRF, which could lead to admin account takeover if an admin is tricked into performing a forged action.
Why this matters
If an attacker can trigger a token change, they can hijack an administrator account, reset the password and email, and maintain access. This can lead to full site compromise, data exfiltration, defacement, or broader impact across connected services.
Most likely attack path
- Exploitation hinges on CSRF with user interaction (UI: required).
- An administrator is deceived into clicking a crafted link; due to weak nonce validation, a forged request updates the user’s authorisation token.
- With the token changed, the attacker can impersonate the admin or reset credentials. No initial privilege is required, but the admin action is needed to trigger the sequence.
Who is most exposed
Public WordPress sites using the vulnerable TextBuilder plugin, especially those on shared hosting with internet-facing admin dashboards, are at greatest risk.
Detection ideas
- Unexpected admin password/email changes after suspected phishing activity.
- Forged token update requests hitting the handleToken endpoint without valid nonce checks.
- Admin activity out of pattern: rapid credential changes or new login sessions from unfamiliar IPs post-token update.
- Increased POST requests to CSRF endpoints around admin actions.
- Anomalous browser-side actions following phishing campaigns targeting admins.
Mitigation and prioritisation
- Patch to the latest plugin version or apply vendor-provided fix immediately.
- If patching is delayed, disable the vulnerable plugin or restrict admin actions to non-CSRF-prone paths; enable robust nonce checks and MFA for admins.
- Implement Web Application Firewall rules to monitor/limit suspicious token-change requests.
- Verify backups, perform a staged upgrade, and test admin workflows in a non-production environment.
- Change-management: notify stakeholders, schedule patch window, and conduct post-patch validation.
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