CVE-2020-26773: Restaurant Reservation System 1.0 suffers from an authenticated SQL injection vulnerability, which allows a re

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HIGH 8.8DOWNGRADE

CVE-2020-26773 is a high-severity flaw (CVSS 8.8) affecting restaurant reservation system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Restaurant Reservation System 1.0 suffers from an authenticated SQL injection vulnerability, which allows a remote, authenticated attacker to execute arbitrary SQL commands via the date parameter in includes/reservation.inc.php.

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	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-89
Published	2021-01-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: restaurant 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

2021-01-07 15:15 UTCPublished CVE record published
2026-06-17 03:08 UTCUpdated Record last modified

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

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

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

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

dnf --showduplicates list restaurant-reservation-system sudo dnf downgrade restaurant-reservation-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add restaurant-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-2020-26773?

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

Is CVE-2020-26773 being exploited?

CVE-2020-26773 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-2020-26773 affect?

CVE-2020-26773 affects restaurant reservation system. Severity is high (CVSS 8.8). Restaurant Reservation System 1.0 suffers from an authenticated SQL injection vulnerability, which allows a remote, authenticated attacker to execute arbitrary SQL commands via the date parameter in includes/reservation.inc.php.

How urgent is CVE-2020-26773?

Priority 50/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

CVE-2024-9811 HIGH 7.3 DOWNGRADE A vulnerability classified as critical has been found in code-projects Restaurant Reservation System 1.0
CVE-2024-9360 HIGH 7.3 DOWNGRADE A vulnerability was found in code-projects Restaurant Reservation System 1.0
CVE-2024-9359 HIGH 7.3 DOWNGRADE A vulnerability was found in code-projects Restaurant Reservation System 1.0 and classified as critical
CVE-2024-9086 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical has been found in code-projects Restaurant Reservation System 1.0
CVE-2024-9085 HIGH 7.3 DOWNGRADE A vulnerability was found in code-projects Restaurant Reservation System 1.0

References

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