CVEvulnerability

CVE-2026-48707

3.1 LOW Published 2026-09-08 Modified 2026-09-11 Official page ↗
Status
Deferred
Published
2026-09-08
Last modified
2026-09-11
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.1 LOW — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-918

Description

InstantCMS is a free and open source content management system. Versions prior to 2.18.2 have a Server-Side Request Forgery (SSRF) vulnerability in the file upload functionality (`system/core/uploader.php` at lines 509-532). When the "upload from URL" feature follows an HTTP redirect, the redirected target URL bypasses the private IP address blacklist check. This allows authenticated users to scan and access internal network services. Version 2.18.2 contains a fix.

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References