How severe is CVE-2023-51297?

CVE-2023-51297 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-51297 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51297?

CVE-2023-51297 affects Phpjabbers Hotel Booking System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51297?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-51297 have an EU (EUVD) identifier?

Yes. CVE-2023-51297 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56018.

When was CVE-2023-51297 published?

CVE-2023-51297 was published on 2025-02-19 and last updated on 2026-06-17.

CVE-2023-51297

CVE-2023-51297 is a medium-severity vulnerability in Phpjabbers Hotel Booking System with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56018
Weakness: CWE-770
Affected product: Phpjabbers Hotel Booking System
Published: 2025-02-19
Last modified: 2026-06-17

Description

A lack of rate limiting in the 'Email Settings' feature of PHPJabbers Hotel Booking System 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.

Frequently asked questions

What is CVE-2023-51297?: A lack of rate limiting in the 'Email Settings' feature of PHPJabbers Hotel Booking System 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.
How severe is CVE-2023-51297?: CVE-2023-51297 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-51297 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51297?: CVE-2023-51297 affects Phpjabbers Hotel Booking System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51297?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-51297 have an EU (EUVD) identifier?: Yes. CVE-2023-51297 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56018.
When was CVE-2023-51297 published?: CVE-2023-51297 was published on 2025-02-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpjabbers:hotel_booking_system:4.0:*:*:*:*:*:*:*

More vulnerabilities in Phpjabbers Hotel Booking System

CVE-2023-40760 — Critical (CVSS 9.8): User enumeration is found in PHP Jabbers Hotel Booking System v4.0. This issue occurs during password recovery, where a…
CVE-2023-51302 — High (CVSS 8.8): PHPJabbers Hotel Booking System v4.0 is vulnerable to CSV Injection vulnerability which allows an attacker to execute…
CVE-2023-51301 — High (CVSS 7.5): A lack of rate limiting in the "Login Section, Forgot Email" feature of PHPJabbers Hotel Booking System v4.0 allows…
CVE-2023-51300 — Medium (CVSS 6.1): PHPJabbers Hotel Booking System v4.0 is vulnerable to Cross-Site Scripting (XSS) vulnerabilities in the "name,…
CVE-2023-51299 — Medium (CVSS 6.1): PHPJabbers Hotel Booking System v4.0 is vulnerable to HTML Injection in the "name, plugin_sms_api_key,…

All CVEs affecting Phpjabbers Hotel Booking System →

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

CVE-2026-31283 — Critical (CVSS 9.8): In Totara LMS v19.1.5 and before, the forgot password API does not implement rate limiting for the target email…
CVE-2020-37067 — Critical (CVSS 9.8): Filetto 1.0 FTP server contains a denial of service vulnerability in the FEAT command processing that allows attackers…
CVE-2021-47875 — Critical (CVSS 9.8): GeoGebra CAS Calculator 6.0.631.0 contains a denial of service vulnerability that allows attackers to crash the…
CVE-2025-11832 — Critical (CVSS 9.8): Allocation of Resources Without Limits or Throttling vulnerability in Azure Access Technology BLU-IC2, Azure Access…
CVE-2024-44241 — Critical (CVSS 9.8): The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.1 and iPadOS 18.1, macOS Sequoia…
CVE-2022-3439 — Critical (CVSS 9.8): Allocation of Resources Without Limits or Throttling in GitHub repository ikus060/rdiffweb prior to 2.5.0.

Browse all CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities →