How severe is CVE-2023-48833?

CVE-2023-48833 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-48833 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-48833?

CVE-2023-48833 affects Phpjabbers Time Slots Booking Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-48833?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-48833 published?

CVE-2023-48833 was published on 2023-12-07 and last updated on 2026-06-17.

CVE-2023-48833

CVE-2023-48833 is a high-severity vulnerability in Phpjabbers Time Slots Booking Calendar with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Phpjabbers Time Slots Booking Calendar
Published: 2023-12-07
Last modified: 2026-06-17

Description

A lack of rate limiting in pjActionAJaxSend in Time Slots Booking Calendar 4.0 allows attackers to cause resource exhaustion.

Frequently asked questions

What is CVE-2023-48833?: A lack of rate limiting in pjActionAJaxSend in Time Slots Booking Calendar 4.0 allows attackers to cause resource exhaustion.
How severe is CVE-2023-48833?: CVE-2023-48833 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-48833 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-48833?: CVE-2023-48833 affects Phpjabbers Time Slots Booking Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-48833?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-48833 published?: CVE-2023-48833 was published on 2023-12-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpjabbers:time_slots_booking_calendar:4.0:*:*:*:*:*:*:*

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