Description
InstantCMS is a free and open source content management system. A blind Server-Side Request Forgery (SSRF) vulnerability in InstantCMS up to and including 2.17.3 allows authenticated remote attackers to make nay HTTP/HTTPS request via the package parameter. It is possible to make any HTTP/HTTPS request to any website in installer functionality. Due to such vulnerability it is possible to for example scan local network, call local services and its functions, conduct a DoS attack, and/or disclose a server's real IP if it's behind a reverse proxy. It is also possible to exhaust server resources by sending plethora of such requests. As of time of publication, no patched releases are available.
Details
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| instantcms | โ | 2.17.3 |
References
Similar Threats
- High CVE-2026-28281
- Medium CVE-2024-50348
- Low CVE-2024-31213
- Medium CVE-2024-31212
- Medium CVE-2023-4878
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