A lack of rate limiting in pjActionAjaxSend in Appointment Scheduler 3.0 allows attackers to cause resource exhaustion.
Priority LOW 35CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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 · NVD. Fix status from CNA. Impact type from CWE-400.
Summary
A lack of rate limiting in pjActionAjaxSend in Appointment Scheduler 3.0 allows attackers to cause resource exhaustion.
Why it matters now
EPSS 0.01051 64th 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
Not available: CISA has not published SSVC decision points for this record.
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-2023-48840
- 2026-10-03 Alias added: GHSA-jgw7-p4wj-h882
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-2023-18125 User enumeration is found in in PHPJabbers Appointment Scheduler 3.0. 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-2023-48840 · CVE Program
- CVE-2023-48840 · NVD
- FIRST EPSS
- GHSA-jgw7-p4wj-h882 · GitHub Advisory Database · CC BY 4.0
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