CVE-2023-51308: PHPJabbers Car Park Booking System v3.0 is vulnerable to Multiple HTML Injection in the "name, plugin_sms_api_

Routine

MEDIUM 6.1DOWNGRADE

CVE-2023-51308 is a medium-severity flaw (CVSS 6.1) 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 Multiple HTML Injection in the "name, plugin_sms_api_key, plugin_sms_country_code, title, plugin_sms_api_key, title" parameters.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-80
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-2023-51308?

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

Is CVE-2023-51308 being exploited?

CVE-2023-51308 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-2023-51308 affect?

CVE-2023-51308 affects car park booking system. Severity is medium (CVSS 6.1). PHPJabbers Car Park Booking System v3.0 is vulnerable to Multiple HTML Injection in the "name, plugin_sms_api_key, plugin_sms_country_code, title, plugin_sms_api_key, title" parameters.

How urgent is CVE-2023-51308?

Priority 34/100. Public exploit reference

Related CVEs

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CVE-2023-51310 MEDIUM 4.3 DOWNGRADE A lack of rate limiting in the 'Forgot Password', 'Email Settings' feature of PHPJabbers Car Park Booking Syst
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

References

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