CVE-2023-51336: PHPJabbers Meeting Room Booking System v1.0 is vulnerable to CSV Injection vulnerability which allows an attac

This month

HIGH 8.8DOWNGRADE

CVE-2023-51336 is a high-severity flaw (CVSS 8.8) affecting meeting room booking system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHPJabbers Meeting Room Booking System v1.0 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

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	0.6% (top 49%)
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 19:15 UTCPublished CVE record published
2026-06-17 06:40 UTCUpdated Record last modified

phpjabbers meeting room booking system DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy meeting-room-booking-system || rpm -q meeting-room-booking-system || meeting-room-booking-system --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison meeting-room-booking-system sudo apt install meeting-room-booking-system=<VERSION_BEFORE_1.0> sudo apt-mark hold meeting-room-booking-system

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

dnf --showduplicates list meeting-room-booking-system sudo dnf downgrade meeting-room-booking-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add meeting-room-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-2023-51336?

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

Is CVE-2023-51336 being exploited?

CVE-2023-51336 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-2023-51336 affect?

CVE-2023-51336 affects meeting room booking system. Severity is high (CVSS 8.8). PHPJabbers Meeting Room Booking System v1.0 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 paramete

How urgent is CVE-2023-51336?

Priority 44/100. High severity

Related CVEs

CVE-2023-51338 MEDIUM 5.4 DOWNGRADE PHPJabbers Meeting Room Booking System v1.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) in the
CVE-2023-51332 MEDIUM 4.3 DOWNGRADE A lack of rate limiting in the 'Forgot Password' feature of PHPJabbers Meeting Room Booking System v1.0 allows

References

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