CVE-2025-4094

Digits < 8.4.6.1 - Authentication Bypass via Weak OTP

2025-04-30 00:00

Strategic Overview

Status: Patched in 8.4.6.1
Affected Plugin: Digits: WordPress Mobile Number Signup and Login
Affected Version: < 8.4.6.1
CVSS: 9.8Critical
Weakness type: CWE-1390 · Weak Authentication
CVE: CVE-2025-4094

View all Digits: WordPress Mobile Number Signup and Login vulnerabilities

At a glance

CVE-2025-4094 is a critical-severity Weak Authentication vulnerability in the Digits WordPress plugin, affecting versions < 8.4.6.1. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 8.4.6.1; sites on affected versions should update now. Disclosed April 2025, reported by Saleh Al Tarawneh (starawneh).

Vulnerability Overview

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.

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 privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-1390: Weak Authentication

The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.

Remediation

Update to version 8.4.6.1, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Digits 8.4.6.1 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-4094 https://www.wordfence.com/threat-intel/vulnerabilities/id/7ab50032-abc0-4160-b9ad-369da67ef79a https://nvd.nist.gov/vuln/detail/CVE-2025-4094

Related records

Other vulnerabilities in Digits: WordPress Mobile Number Signup and Login

CVSS Vector

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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