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CVE-2025-59055

CWE-918: Server-Side Request Forgery (SSRF)
CVSS v3.1: 4.7 (MEDIUM) Published: September 11, 2025 View on NVD →

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.

Affected Products

Vendor Product Versions Affected
instantsoft icms2 <= 2.17.3 (affected)

CVSS Score & Vector

Base Score: 4.7 (MEDIUM)
Vector (v3.1):
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

References & Advisories