How severe is CVE-2023-53877?

CVE-2023-53877 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-53877 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-53877?

CVE-2023-53877 affects Phpjabbers Bus Reservation System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-53877?

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

Does CVE-2023-53877 have an EU (EUVD) identifier?

Yes. CVE-2023-53877 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203429.

When was CVE-2023-53877 published?

CVE-2023-53877 was published on 2025-12-15 and last updated on 2026-06-17.

CVE-2023-53877

CVE-2023-53877 is a critical-severity vulnerability in Phpjabbers Bus Reservation System with a CVSS 3.x base score of 9.8. 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-203429
Weakness: CWE-89
Affected product: Phpjabbers Bus Reservation System
Published: 2025-12-15
Last modified: 2026-06-17

Description

Bus Reservation System 1.1 contains a SQL injection vulnerability in the pickup_id parameter that allows attackers to manipulate database queries. Attackers can exploit boolean-based, error-based, and time-based blind SQL injection techniques to steal information from the database.

Frequently asked questions

What is CVE-2023-53877?: Bus Reservation System 1.1 contains a SQL injection vulnerability in the pickup_id parameter that allows attackers to manipulate database queries. Attackers can exploit boolean-based, error-based, and time-based blind SQL injection techniques to steal information from the database.
How severe is CVE-2023-53877?: CVE-2023-53877 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-53877 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-53877?: CVE-2023-53877 affects Phpjabbers Bus Reservation System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-53877?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2023-53877 have an EU (EUVD) identifier?: Yes. CVE-2023-53877 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203429.
When was CVE-2023-53877 published?: CVE-2023-53877 was published on 2025-12-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpjabbers:bus_reservation_system:1.1:*:*:*:*:*:*:*

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