CVE-2023-48837: Car Rental Script 3.0 is vulnerable to Multiple HTML Injection issues via SMS API Key or Default Country Code.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2023-48837 is a medium-severity flaw (CVSS 5.4) affecting car rental script. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Car Rental Script 3.0 is vulnerable to Multiple HTML Injection issues via SMS API Key or Default Country Code.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-12-07
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

2023-12-07 07:15 UTCPublished CVE record published
2026-06-17 06:35 UTCUpdated Record last modified

phpjabbers car rental script 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-rental-script || rpm -q car-rental-script || car-rental-script --version

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

apt-cache madison car-rental-script sudo apt install car-rental-script=<VERSION_BEFORE_3.0> sudo apt-mark hold car-rental-script

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

dnf --showduplicates list car-rental-script sudo dnf downgrade car-rental-script-<VERSION_BEFORE_3.0> sudo dnf versionlock add car-rental-script

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-2023-48837?

car rental script: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-48837 being exploited?

CVE-2023-48837 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-2023-48837 affect?

CVE-2023-48837 affects car rental script. Severity is medium (CVSS 5.4). Car Rental Script 3.0 is vulnerable to Multiple HTML Injection issues via SMS API Key or Default Country Code.

How urgent is CVE-2023-48837?

Priority 34/100. Public exploit reference

Related CVEs

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CVE-2023-48834 HIGH 7.5 DOWNGRADE A lack of rate limiting in pjActionAjaxSend in Car Rental v3.0 allows attackers to cause resource exhaustion.
CVE-2023-40764 CRITICAL 9.8 DOWNGRADE User enumeration is found in PHP Jabbers Car Rental Script v3.0
CVE-2023-40754 HIGH 8.8 DOWNGRADE In PHPJabbers Car Rental Script 3.0, lack of verification when changing an email address and/or password (on t

References

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