What’s Vulnerable › Vulnerabilities

CVE-2023-33562

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-08-01 · updated 2026-06-17

Description

User enumeration is found in in PHP Jabbers Time Slots Booking Calendar v3.3. 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 Time Slots Booking Calendar: 3.3

References

• https://medium.com/%40bcksec/multiple-vulnerabilities-in-php-jabbers-scripts-25af4afcadd4
• https://www.phpjabbers.com/time-slots-booking-calendar/
• https://medium.com/%40bcksec/multiple-vulnerabilities-in-php-jabbers-scripts-25af4afcadd4
• https://www.phpjabbers.com/time-slots-booking-calendar/

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