TI-2023-26647 Aliases CVE-2023-48831 GHSA-fc6j-w9hx-r5xv

A lack of rate limiting in pjActionAJaxSend in Availability Booking Calendar 5.0 allows…

HIGH 72CWE-770Published 2023-12-07 · Updated 2024-10-09

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 · CISA ADP. Fix status from CNA. Impact type from CWE-770.

Summary

A lack of rate limiting in pjActionAJaxSend in Availability Booking Calendar 5.0 allows attackers to cause resource exhaustion.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01162 67th 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: 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:availability_booking_calendar:5.0:::::::*	5.0	Vulnerable	PHPJabbers

cpe:2.3:a:phpjabbers:availability_booking_calendar:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·PHPJabbers

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-48831
2026-10-03 Alias added: GHSA-fc6j-w9hx-r5xv

References

Exploit 1

http://packetstormsecurity.com/files/176039

Other 1

https://www.phpjabbers.com/availability-booking-calendar/#sectionDemo

TI-2023-03806 PHP Jabbers Availability Booking Calendar index.php cross site scripting CVSS 3.1MEDIUM 6.1
TI-2023-18128 PHPJabbers Availability Booking Calendar 5.0 is vulnerable to User Account Takeover through username/password change. CVSS 3.1CRITICAL 9.8
TI-2023-18127 PHP Jabbers Availability Booking Calendar 5.0 is vulnerable to Incorrect Access Control. CVSS 3.1CRITICAL 9.8
TI-2023-18126 PHPJabbers Availability Booking Calendar 5.0 is vulnerable to Incorrect Access Control… CVSS 3.1CRITICAL 9.8
TI-2023-26079 Availability Booking Calendar 5.0 allows CSV injection via the unique ID field in the Reservations list component. CVSS 3.1HIGH 8.8
TI-2023-26080 A Cross Site Scripting vulnerability in Availability Booking Calendar 5.0 allows an… CVSS 3.1MEDIUM 6.1

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences