4.7
/ 10
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
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.
Basic Information
ID
CVE-2025-59055
Source
GitHub_M
Published
Sep 11, 2025 at 18:46
Modified
Sep 11, 2025 at 19:10
Affected Product
Vendor
instantsoft
Product
icms2
Version
<= 2.17.3
Affected Versions
instantsoft icms2 <= 2.17.3