CVE-2026-0591
Published: 05 January 2026
Summary
CVE-2026-0591 is a medium-severity Injection (CWE-74) vulnerability in Fabian Online Product Reservation System. Its CVSS base score is 6.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 20.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing uses SQL injection payloads against database interfaces, identifying and supporting fixes for SQL injection weaknesses.
Developer assessments and testing (including injection-focused techniques) identify improper neutralization of special elements, and the verifiable flaw remediation corrects them pre-deployment.
Validates query inputs to prevent SQL syntax or command manipulation.
Identifies indicators of injection attacks (command, SQL, LDAP, etc.) via anomaly and attack monitoring.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
SQL injection in a web app's checkout handler directly enables remote exploitation of a public-facing application (T1190) by authenticated attackers via crafted id/qty parameters.
NVD Description
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…
more
possible to launch the attack remotely. The exploit is publicly available and might be used.
Deeper analysisAI
CVE-2026-0591 is a SQL injection vulnerability (CWE-74, CWE-89) in code-projects Online Product Reservation System 1.0. The affected component is the Cart Update Handler, specifically an unknown function in the file /app/checkout/update.php, which improperly handles the arguments id and qty, enabling SQL injection.
The vulnerability allows remote exploitation by an authenticated attacker with low privileges (PR:L). Per the CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L), successful attacks can result in low-level impacts to confidentiality, integrity, and availability, such as unauthorized data access or modification via injected SQL payloads.
Advisories on VulDB (ctiid.339501, id.339501) and GitHub repositories document the issue, with a publicly available proof-of-concept exploit demonstrating SQL injection in the checkout update endpoint.
The exploit is hosted on GitHub under foeCat/CVE/OnlineProductReservation_PHP/sqli_checkout_update.php.md, including POC details, increasing the risk of real-world abuse.
Details
- CWE(s)