CVE-2023-51293 Denial of service in n/a

High 7.5 Published Updated

Attackers can cause denial of service by flooding email inboxes via the forgot password feature due to missing rate limits.

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-2023-51293?

CVE-2023-51293 is a high-severity denial of service vulnerability in n/a, published on 19 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', 'Email Settings' feature of PHPJabbers Event Booking Calendar v4.0 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-2023-51293?

It affects 1 product.

Products include Phpjabbers Event Booking Calendar.

How do I fix CVE-2023-51293?

No fix has been published for CVE-2023-51293 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-2023-51293 being exploited?

There is no known exploitation of CVE-2023-51293 in the wild and no public exploit code.

Sources

Also known as GHSA-v685-v3qp-pgjp.

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