What’s Vulnerable › Vulnerabilities

CVE-2023-40765

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-08-28 · updated 2026-06-17
• Weakness: CWE-209

Description

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.

Affected products

• PHP Jabbers Event Booking Calendar: 4.0

References

• https://medium.com/%40mfortinsec/multiple-vulnerabilities-in-phpjabbers-part-3-40fc3565982f
• https://www.phpjabbers.com/event-booking-calendar/
• https://medium.com/%40mfortinsec/multiple-vulnerabilities-in-phpjabbers-part-3-40fc3565982f
• https://www.phpjabbers.com/event-booking-calendar/

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