External risk intelligence

PHPGurukul User Registration & Login System Session Hijacking Vulnerability.

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-45949

The vulnerability resides in a user registration and login system, which by design functions as a web-based portal intended to be accessed over a network for user account management and authentication. Such applications are commonly deployed as internet-facing services to allow users to register and access their accounts remotely.

Phpgurukul User Registration \& Login And User Management System

3.3

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical security flaw has been identified in a user registration and login system, impacting its password change component. This vulnerability could allow attackers to take over user accounts by hijacking sessions remotely, posing a significant risk to systems that utilize this software for managing user access and data.

Session hijacking allows unauthorized account access.
Protects user data and system integrity.
Confirm if this system is in use.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending a crafted request to the system's change password component. This could allow them to take over a user's account, leading to unauthorized access and control.

Entry condition: Unauthenticated network access.
Trigger point: User panel's change password feature.
Resulting risk: Complete account takeover.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthorized individual to take over a user's account when they interact with the change password functionality of the system. The system's improper handling of session data is the key weakness that enables this remote attack.

User account access.
Remotely through the change password feature.
Unauthorized account control.

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical vulnerability in PHPGurukul User Registration & Login and User Management System is likely to affect application owners responsible for user-facing web portals. The immediate first step is to identify all instances of the affected system, confirm their accessibility and business criticality, and then determine the accountable owner before planning remediation based on assessed risk.

Application owners should prioritize this issue.
Verify system exposure and business criticality first.
Plan remediation with vendor coordination.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is the PHPGurukul User Registration & Login and User Management System?

It is a web-based software application designed to handle account creation, user authentication, and profile management. Developers and administrators use it as a foundational portal to manage user access, store credentials, and secure login workflows within their web environments.

What does CVE-2025-45949 mean by Session Hijacking?

This vulnerability relates to CWE-384, or Session Fixation/Hijacking. It means the software does not securely manage the unique tokens that identify a logged-in user. Because these identifiers are handled improperly, an attacker can manipulate or steal a valid session to masquerade as an authorized user without needing their password.

How is CVE-2025-45949 triggered?

An attacker triggers this by sending a specifically crafted network request to the password change component in the user panel. Note that this is not triggered by standard user interactions like simply viewing a profile; it requires specific, malicious input directed at the session management logic within the password change script.

Do I need to worry if my system is internal-only?

According to Halo Surface Signal, this software is often designed as an internet-facing portal for remote account management. While internal systems have a smaller attack surface, they are not immune. You should evaluate if the portal is reachable from any untrusted network, as the ability to send network requests to the affected login component is the primary requirement for exploitation.

What should I do if I run this software?

Begin by auditing your infrastructure to locate every instance of this specific system. Once identified, evaluate the business criticality of those assets. Coordinate with your team to verify current exposure levels and check the vendor's official support channels for updates or configuration guidance to secure your session handling.

References

github.com/VasilVK/CVE/blob/main/CVE-2025-45949/README.MD

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.