CVE-2026-0577
Published: 04 January 2026
Summary
CVE-2026-0577 is a medium-severity Improper Access Control (CWE-284) vulnerability in Fabian Online Product Reservation System. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Web Shell (T1505.003); ranked at the 22.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-0577 is an unrestricted file upload vulnerability in the code-projects Online Product Reservation System 1.0. The flaw affects an unknown functionality within the file /handgunner-administrator/prod.php, allowing attackers to execute manipulations that bypass upload restrictions. This issue, associated with CWE-284 (Improper Access Control) and CWE-434 (Unrestricted Upload of File with Dangerous Type), carries a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L) and was published on 2026-01-04.
The vulnerability can be exploited remotely by an authenticated attacker with low privileges (PR:L), requiring no user interaction. Successful exploitation enables limited impacts on confidentiality, integrity, and availability, potentially allowing attackers to upload malicious files that could lead to further compromise depending on server configuration and file handling.
Advisories and references, including entries on VulDB (ctiid.339461 and id.339461), a GitHub repository with proof-of-concept exploit code, and the vendor site at code-projects.org, confirm the issue but do not detail specific patches or mitigations. Security practitioners should review these sources for updates and consider restricting access to the affected endpoint or upgrading the software if patches become available.
An exploit has been publicly disclosed, increasing the risk of real-world attacks against exposed instances of this system.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-0777
Vulnerability details
A flaw has been found in code-projects Online Product Reservation System 1.0. Affected by this vulnerability is an unknown functionality of the file /handgunner-administrator/prod.php. Executing a manipulation can lead to unrestricted upload. It is possible to launch the attack remotely.…
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The exploit has been published and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload (CWE-434) directly enables deployment of web shells on the affected web application server.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Enforces access restrictions on the /handgunner-administrator/prod.php endpoint so that low-privilege authenticated users cannot perform unrestricted file uploads.
Requires validation of all input (file type, extension, content) before accepting uploads to prod.php, directly blocking the CWE-434 unrestricted upload flaw.
Limits privileges of authenticated users so they cannot reach or exercise the file-upload functionality exposed in the vulnerable administrator script.