CVE-2023-51311: PHPJabbers Car Park Booking System v3.0 is vulnerable to CSV Injection vulnerability which allows an attacker

This month

HIGH 8.8DOWNGRADE

CVE-2023-51311 is a high-severity flaw (CVSS 8.8) affecting car park booking system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHPJabbers Car Park Booking System v3.0 is vulnerable to CSV Injection vulnerability which allows an attacker to execute remote code. The vulnerability exists due to insufficient input validation on Languages section Labels any parameters field in System Options that is used to construct CSV file.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-1236
Published	2025-02-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: phpjabbers

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-20 15:15 UTCPublished CVE record published
2026-06-17 06:40 UTCUpdated Record last modified

phpjabbers car park booking system DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy car-park-booking-system || rpm -q car-park-booking-system || car-park-booking-system --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison car-park-booking-system sudo apt install car-park-booking-system=<VERSION_BEFORE_3.0> sudo apt-mark hold car-park-booking-system

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list car-park-booking-system sudo dnf downgrade car-park-booking-system-<VERSION_BEFORE_3.0> sudo dnf versionlock add car-park-booking-system

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-51311?

car park booking system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-51311 being exploited?

CVE-2023-51311 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-51311 affect?

CVE-2023-51311 affects car park booking system. Severity is high (CVSS 8.8). PHPJabbers Car Park Booking System v3.0 is vulnerable to CSV Injection vulnerability which allows an attacker to execute remote code. The vulnerability exists due to insufficient input validation on Languages section Labels any parameters f

How urgent is CVE-2023-51311?

Priority 49/100. High severity; Public exploit reference

Related CVEs

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CVE-2023-51309 MEDIUM 4.3 DOWNGRADE A lack of rate limiting in the 'Email Settings' feature of PHPJabbers Car Park Booking System v3.0 allows atta
CVE-2023-51308 MEDIUM 6.1 DOWNGRADE PHPJabbers Car Park Booking System v3.0 is vulnerable to Multiple HTML Injection in the "name, plugin_sms_api_

References

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