CVE-2023-0651
CWE-434Published: February 2, 2023· Updated: Jun 17, 2026
Official Description
A vulnerability was found in FastCMS 0.1.0. It has been classified as critical. Affected is an unknown function of the component Template Management. The manipulation leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
Risk Analysis
FastCMS 0.1.0 is vulnerable to unrestricted file uploads within its template management component. This critical flaw allows remote attackers to upload and execute arbitrary files on the server.
No public exploit is known, and it is not in CISA KEV. The vulnerability is remotely exploitable with low attack complexity.
Upgrade FastCMS to a version beyond 0.1.0 and restrict access to the template management functionality.
Technical Analysis
CVE-2023-0651 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (9)
Quick Facts
Related CVEs (CWE-434)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-0651 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts