Digits < 8.4.6.1 — Authentication Bypass via Weak OTP
CVE-2025-4094Published · Updated Action summary
Affected: <8.4.6.1Update to 8.4.6.1 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-1390 Weak Authentication
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Digits: WordPress Mobile Number Signup and Login digits
- Affected< 8.4.6.1
- Patched in8.4.6.1
Update to 8.4.6.1 or newer.
You are affected if you run < 8.4.6.1. Version 8.4.6.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Digits: WordPress Mobile Number Signup and Login.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 8.4.6.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Digits: WordPress Mobile Number Signup and Login to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Saleh Al Tarawneh (starawneh).
The Digits: WordPress Mobile Number Signup and Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to 8.4.6.1 (exclusive). This is due to the plugin not using a sufficiently strong OTP or implementing OTP brute force protection. This makes it possible for unauthenticated attackers to gain access to other user's accounts, including administrators, if the OTP is successfully brute forced.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Digits: WordPress Mobile Number Signup and Login
All 4| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.3 | Unauthenticated Privilege Escalation ≤9.2No patch available | CVE-2026-28165 | |
| High8.8 | Authenticated (Subscriber+) Privilege Escalation via 'digits_reg_userrole' Parameter ≤9.1.0.5Update to 9.1.0.6 | CVE-2026-13741 | |
| High8.8 | Cross-Site Request Forgery to Privilege Escalation 8.4.1 – 8.4.1Update to 8.4.2 | CVE-2024-0203 |
- High7.3Unauthenticated Privilege Escalation
≤9.2No patch available
- High8.8Authenticated (Subscriber+) Privilege Escalation via 'digits_reg_userrole' Parameter
≤9.1.0.5Update to 9.1.0.6
- High8.8Cross-Site Request Forgery to Privilege Escalation
8.4.1 – 8.4.1Update to 8.4.2
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.