What is the CVSS score of CVE-2023-51309?

CVE-2023-51309 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L. EPSS exploitation probability: 0.3%.

Which versions of Car Park Booking System are affected by CVE-2023-51309?

CVE-2023-51309 presents moderate security risk rated CVSS 4.3. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available.

Is there a public PoC exploit available for CVE-2023-51309?

Yes, a public proof-of-concept exploit is available for CVE-2023-51309. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2023-51309?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Car Park Booking System CVE-2023-51309

MEDIUM

Allocation of Resources Without Limits or Throttling (CWE-770)

2025-02-20 cve@mitre.org

Denial Of Service Car Park Booking System

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:27 vuln.today

PoC Detected

Nov 04, 2025 - 19:16 vuln.today

Public exploit code

CVE Published

Feb 20, 2025 - 15:15 nvd

MEDIUM 4.3

DescriptionCVE.org

A lack of rate limiting in the 'Email Settings' feature of PHPJabbers Car Park Booking System v3.0 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.

AnalysisAI

A lack of rate limiting in the 'Email Settings' feature of PHPJabbers Car Park Booking System v3.0 allows attackers to send an excessive amount of email for a legitimate user, leading to a possible. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Allocation of Resources Without Limits (CWE-770), which allows attackers to exhaust system resources through uncontrolled allocation. A lack of rate limiting in the 'Email Settings' feature of PHPJabbers Car Park Booking System v3.0 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. Affected products include: Phpjabbers Car Park Booking System.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Set resource limits, implement rate limiting, validate input sizes.