User enumeration is found in in PHPJabbers Appointment Scheduler 3.0.
Priority MEDIUM 40CWE-203Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-203.
Summary
User enumeration is found in in PHPJabbers Appointment Scheduler 3.0. 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 None reported CISA SSVC · not in CISA KEV
EPSS 0.00709 53rd 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
- None
- Automatable
- Yes
- 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:appointment_scheduler:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | PHPJabbers |
- cpe:2.3:a:phpjabbers:appointment_scheduler:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·PHPJabbers
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-36127
- 2026-10-03 Alias added: GHSA-j2w9-9v56-q925
- 2026-10-11 EPSS moved to the 50th–90th percentile
References
More PHPJabbers Appointment Scheduler vulnerabilities
- TI-2023-26656 Appointment Scheduler 3.0 is vulnerable to CSV Injection via a Language > Labels > Export action. CVSS 3.1HIGH 8.8
- TI-2023-18124 There is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of… CVSS 3.1MEDIUM 6.1
- TI-2023-26655 A lack of rate limiting in pjActionAjaxSend in Appointment Scheduler 3.0 allows attackers to cause resource exhaustion. CVSS 3.1HIGH 7.5
- TI-2014-08163 Multiple cross-site request forgery (CSRF) vulnerabilities in PHPJabbers Appointment… CVSS 2.0MEDIUM 6.8
- TI-2014-08172 Directory traversal vulnerability in PHPJabbers Appointment Scheduler 2.0 allows remote… CVSS 2.0MEDIUM 5.0
- TI-2023-26654 Appointment Scheduler 3.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS)… CVSS 3.1MEDIUM 5.4
Sources
- CVE-2023-36127 · CVE Program
- CVE-2023-36127 · NVD
- FIRST EPSS
- GHSA-j2w9-9v56-q925 · 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