CVE-2026-0953

Tutor LMS Pro <= 3.9.5 - Authentication Bypass via Social Login

2026-03-09 16:33
Phat RiO

Strategic Overview

Status
Patched in 3.9.6
Affected Plugin
Tutor LMS Pro
Affected Version
<= 3.9.5
CVSS
9.8Critical
Weakness type
CWE-287 · Improper Authentication
CVE
CVE-2026-0953
View all Tutor LMS Pro vulnerabilities

At a glance

CVE-2026-0953 is a critical-severity Improper Authentication vulnerability in the Tutor LMS Pro WordPress plugin, affecting versions <= 3.9.5. 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 3.9.6; sites on affected versions should update now. Disclosed March 2026, reported by Phat RiO.

Vulnerability Overview

The Tutor LMS Pro plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 3.9.5 via the Social Login addon. This is due to the plugin failing to verify that the email provided in the authentication request matches the email from the validated OAuth token. This makes it possible for unauthenticated attackers to log in as any existing user, including administrators, by supplying a valid OAuth token from their own account along with the victim's email address.

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-287: Improper Authentication

Reaching this weakness in Tutor LMS Pro <= 3.9.5 takes a caller who can reach the endpoint. Improper authentication means the mechanism that proves who a caller is can be satisfied without the secret it was supposed to require.

An attacker authenticates as another user — administrators included — without ever knowing a password, so password policies and login rate limits never come into play. For Tutor LMS Pro the fix is 3.9.6: builds <= 3.9.5 are affected, anything from 3.9.6 onward is not.

Remediation

Update to version 3.9.6, 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: Tutor LMS Pro 3.9.6 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-0953https://www.wordfence.com/threat-intel/vulnerabilities/id/92a120ac-66ae-4678-a87a-e62da885d50bhttps://nvd.nist.gov/vuln/detail/CVE-2026-0953

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C