CVE-2026-0591: A vulnerability was identified in code-projects Online Product Reservation System 1.0

Routine

MEDIUM 6.3DOWNGRADE

CVE-2026-0591 is a medium-severity flaw (CVSS 6.3) affecting online product reservation system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was identified in code-projects Online Product Reservation System 1.0. The impacted element is an unknown function of the file /app/checkout/update.php of the component Cart Update Handler. Such manipulation of the argument id/qty leads to sql injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-74, CWE-89
Published	2026-01-05
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: fabian

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-05 14:15 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

fabian online product 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 online-product-reservation-system || rpm -q online-product-reservation-system || online-product-reservation-system --version

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

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

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

dnf --showduplicates list online-product-reservation-system sudo dnf downgrade online-product-reservation-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add online-product-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-2026-0591?

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

Is CVE-2026-0591 being exploited?

CVE-2026-0591 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-2026-0591 affect?

CVE-2026-0591 affects online product reservation system. Severity is medium (CVSS 6.3). A vulnerability was identified in code-projects Online Product Reservation System 1.0. The impacted element is an unknown function of the file /app/checkout/update.php of the component Cart Update Handler. Such manipulation of the argument

How urgent is CVE-2026-0591?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-0578 HIGH 7.3 DOWNGRADE A vulnerability has been found in code-projects Online Product Reservation System 1.0
CVE-2026-0589 HIGH 7.3 DOWNGRADE A vulnerability was found in code-projects Online Product Reservation System 1.0
CVE-2026-0585 HIGH 7.3 DOWNGRADE A security vulnerability has been detected in code-projects Online Product Reservation System 1.0
CVE-2026-0592 HIGH 7.3 DOWNGRADE A security flaw has been discovered in code-projects Online Product Reservation System 1.0
CVE-2026-0590 MEDIUM 6.3 DOWNGRADE A vulnerability was determined in code-projects Online Product Reservation System 1.0

References

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