User enumeration is found in PHPJabbers Event Booking Calendar v4.0.
Priority HIGH 82CWE-209Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-209.
Summary
User enumeration is found in PHPJabbers Event Booking Calendar v4.0. This issue occurs during password recovery, where a difference in messages could allow an attacker to determine if the user is valid or not, enabling a brute force attack with valid users.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00891 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
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:event_booking_calendar:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | PHPJabbers |
- cpe:2.3:a:phpjabbers:event_booking_calendar: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-2023-40765
- 2026-10-03 Alias added: GHSA-2c44-v444-62h2
References
More PHPJabbers Event Booking Calendar vulnerabilities
- TI-2014-08177 SQL injection vulnerability in load-calendar.php in PHPJabbers Event Booking Calendar 2.0… CVSS 2.0HIGH 7.5
- TI-2023-27968 A lack of rate limiting in the 'Forgot Password', 'Email Settings' feature of PHPJabbers… CVSS 3.1HIGH 7.5
- TI-2014-08176 Multiple cross-site request forgery (CSRF) vulnerabilities in PHPJabbers Event Booking… CVSS 2.0MEDIUM 6.8
- TI-2023-27969 PHPJabbers Event Booking Calendar v4.0 is vulnerable to Multiple HTML Injection in the… CVSS 3.1MEDIUM 6.5
- TI-2023-27970 PHPJabbers Event Booking Calendar v4.0 is vulnerable to Cross-Site Scripting (XSS) in the… CVSS 3.1MEDIUM 6.1
- TI-2023-27972 PHPJabbers Event Booking Calendar v4.0 is vulnerable to CSV Injection vulnerability which… CVSS 3.1MEDIUM 4.7
Sources
- CVE-2023-40765 · CVE Program
- CVE-2023-40765 · NVD
- FIRST EPSS
- GHSA-2c44-v444-62h2 · 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