Is this vulnerability remotely exploitable?

Yes. Any remote user who can reach the PolarLearn API and knows a banned account identifier can attempt to exploit the flawed sign-in logic.

What level of access does an attacker need?

The attacker must control or know credentials for a banned account, or at least know the account identifier well enough to trigger the flawed session creation process. No prior authenticated access is needed beyond reaching the public sign-in endpoint.

What is the safest general fix pattern?

Re-architect the sign-in flow so that sessions or tokens are issued only after all authentication checks succeed: verify the password, confirm that the account is not banned or disabled, and then create the session. Additionally, ensure that all authenticated routes confirm that the associated account is still in a valid state.

Severity:

HIGH RISK

(8.8)

Improper Authentication Logic (CWE-287) in PolarLearn Sign-In Endpoint

CVE-2026-39322

Published:

Apr 7, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-94

HIGH RISK

HIGH

(8.8)

PHP Code Injection via File Upload (CWE-94) in Aero CMS Admin Post Creation

Remote Code Execution by authenticated users via malicious file upload

May 10, 2026

CWE-94

HIGH RISK

HIGH

(8.8)

Code Injection (CWE-94) via Module Parameters in Evolution CMS

Remote Code Execution by Authenticated Users

May 10, 2026

Vulnerability Type

Category:

Improper Authentication

CWE:

CWE-287

Impact:

Bypass of Account Ban and Unauthorized Access to Protected Resources

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Authentication

CWE:

CWE-287

Impact:

Bypass of Account Ban and Unauthorized Access to Protected Resources

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

Start Free Trial

Get Pentest Report

Ship clean & secure code faster

Start Free Trial

Get Pentest Report

Ship clean & secure code faster

Start Free Trial

Get Pentest Report

CodeAnt AI is an offensive and defensive security platform.

Defensive + offensive security.

From first line of code to a pentest
that knows every line of it.

SOC 2 Type II certified | CodeAnt AI is independently audited and compliant with SOC 2 Type II security standards

Ask AI for summary of CodeAnt

Defensive + offensive security.

From first line of code to a pentest that knows every line of it.

Ask AI for summary of CodeAnt

Defensive + offensive security.

From first line of code to a pentest that knows every line of it.

Ask AI for summary of CodeAnt

Improper Authentication Logic (CWE-287) in PolarLearn Sign-In Endpoint

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.8)

PHP Code Injection via File Upload (CWE-94) in Aero CMS Admin Post Creation

HIGH RISK

HIGH

(8.8)

Code Injection (CWE-94) via Module Parameters in Evolution CMS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

Product

Compare

Company

Developers

Legal

Product

Compare

Company

Developers

Legal

Product

Compare

Company

Developers

Legal