CVE-2025-59055

MEDIUM

4.7

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.

CVE Details

CVSS v3.1 Score4.7

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

Published9/11/2025

Last Modified9/24/2025

Sourcenvd

Honeypot Sightings0

Affected Products

instantcms:instantcms

Weaknesses (CWE)

CWE-918

References

https://github.com/instantsoft/icms2/commit/fa997bdab3429fad0c850966bfacbcb96d5ab041(security-advisories@github.com)

https://github.com/instantsoft/icms2/security/advisories/GHSA-79hh-mhvg-whrw(security-advisories@github.com)

IOC Correlations

No correlations recorded

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