CVE-2023-51316 Denial of service in n/a

High 7.5 Published 20 Feb 2025 Updated 4 Nov 2025

Attackers can cause denial of service by flooding email inboxes via the unthrottled forgot password feature in PHPJabbers Bus Reservation System.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-51316?

CVE-2023-51316 is a high-severity denial of service vulnerability in n/a, published on 20 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A lack of rate limiting in the 'Forgot Password' feature of PHPJabbers Bus Reservation System v1.1 allows attackers to send an excessive amount of email for a legitimate user, leading to a possible Denial of Service (DoS) via a large amount of generated e-mail messages.

Weakness: CWE-400

Which versions are affected by CVE-2023-51316?

It affects 1 product.

Products include Phpjabbers Bus Reservation System.

How do I fix CVE-2023-51316?

No fix has been published for CVE-2023-51316 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-51316 being exploited?

There is no known exploitation of CVE-2023-51316 in the wild and no public exploit code.

Sources

Also known as GHSA-m4wh-553v-44vf.