A lack of rate limiting in the 'Email Settings' feature of PHPJabbers Hotel Booking…
Priority MEDIUM 62CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-770.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00547 46th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:phpjabbers:hotel_booking_system:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | PHPJabbers |
- cpe:2.3:a:phpjabbers:hotel_booking_system:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·PHPJabbers
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-51297
- 2026-10-03 Alias added: GHSA-x549-732m-pw36
References
More PHPJabbers Hotel Booking System vulnerabilities
- TI-2023-21532 User enumeration is found in PHP Jabbers Hotel Booking System v4.0. CVSS 3.1CRITICAL 9.8
- TI-2023-27976 PHPJabbers Hotel Booking System v4.0 is vulnerable to CSV Injection vulnerability which… CVSS 3.1HIGH 8.8
- TI-2023-27975 A lack of rate limiting in the "Login Section, Forgot Email" feature of PHPJabbers Hotel… CVSS 3.1HIGH 7.5
- TI-2023-27974 PHPJabbers Hotel Booking System v4.0 is vulnerable to Cross-Site Scripting (XSS)… CVSS 3.1MEDIUM 6.1
- TI-2023-27973 PHPJabbers Hotel Booking System v4.0 is vulnerable to HTML Injection in the "name… CVSS 3.1MEDIUM 6.1
Sources
- CVE-2023-51297 · CVE Program
- CVE-2023-51297 · NVD
- FIRST EPSS
- GHSA-x549-732m-pw36 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences