CVE-2021-44091: A Cross-Site Scripting (XSS) vulnerability exists in Courcecodester Multi Restaurant Table Reservation System

Routine

MEDIUM 5.4DOWNGRADE

CVE-2021-44091 is a medium-severity flaw (CVSS 5.4) affecting multi restaurant table reservation system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Cross-Site Scripting (XSS) vulnerability exists in Courcecodester Multi Restaurant Table Reservation System 1.0 in register.php via the (1) fullname, (2) phone, and (3) address parameters.

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	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-01-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: multi restaurant table reservation system project

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

Am I affected?

Timeline

2022-01-20 18:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

multi restaurant table reservation system project multi restaurant table reservation 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 multi-restaurant-table-reservation-system || rpm -q multi-restaurant-table-reservation-system || multi-restaurant-table-reservation-system --version

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

apt-cache madison multi-restaurant-table-reservation-system sudo apt install multi-restaurant-table-reservation-system=<VERSION_BEFORE_1.0> sudo apt-mark hold multi-restaurant-table-reservation-system

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

dnf --showduplicates list multi-restaurant-table-reservation-system sudo dnf downgrade multi-restaurant-table-reservation-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add multi-restaurant-table-reservation-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-2021-44091?

multi restaurant table reservation system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-44091 being exploited?

CVE-2021-44091 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-2021-44091 affect?

CVE-2021-44091 affects multi restaurant table reservation system. Severity is medium (CVSS 5.4). A Cross-Site Scripting (XSS) vulnerability exists in Courcecodester Multi Restaurant Table Reservation System 1.0 in register.php via the (1) fullname, (2) phone, and (3) address parameters.

How urgent is CVE-2021-44091?

Priority 36/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-1192 MEDIUM 6.3 DOWNGRADE A vulnerability was found in SourceCodester Multi Restaurant Table Reservation System 1.0
CVE-2025-1191 MEDIUM 6.3 DOWNGRADE A vulnerability was found in SourceCodester Multi Restaurant Table Reservation System 1.0 and classified as cr
CVE-2020-36553 MEDIUM 5.4 DOWNGRADE Cross Site Scripting (XSS) vulnerability in sourcecodester Multi Restaurant Table Reservation System 1.0 via t
CVE-2020-36552 MEDIUM 5.4 DOWNGRADE Cross Site Scripting (XSS) vulnerability in sourcecodester Multi Restaurant Table Reservation System 1.0 via t
CVE-2020-36551 MEDIUM 5.4 DOWNGRADE Cross Site Scripting (XSS) vulnerability in sourcecodester Multi Restaurant Table Reservation System 1.0 via t

References

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