CVE-2026-48707

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.

• CWE-918

• https://github.com/instantsoft/icms2/commit/04b8fe0eb75fc5f44eecb15684c7d3660586683d
• https://github.com/instantsoft/icms2/security/advisories/GHSA-cm47-mwv3-f534
• https://github.com/instantsoft/icms2/security/advisories/GHSA-cm47-mwv3-f534

Published

Sep 8, 2026

Last Modified

Sep 11, 2026

Status

Deferred

• One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-4870IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker …7.5
• CVE-2026-48700An issue was discovered in all versions of PCManFM-Qt starti…9.3
• CVE-2026-48702Rekor is a software supply chain transparency log. Starting …7.5
• CVE-2026-48703Warp is an agentic development environment. From 0.2025.04.0…7.8
• CVE-2026-48704Warp is an agentic development environment. From 0.2023.10.2…8.8
• CVE-2026-48706Envoy is an open source edge and service proxy designed for …7.5
• CVE-2026-48708OliveTin gives access to predefined shell commands from a we…7.5
• CVE-2026-48709OliveTin gives access to predefined shell commands from a we…3.7
• CVE-2026-4871The Sports Club Management plugin for WordPress is vulnerabl…6.4
• CVE-2026-48710Starlette is a lightweight ASGI framework/toolkit. Prior to …6.5
• CVE-2026-48711SSHFS is a network filesystem client for connecting to SSH s…7
• CVE-2026-48712protobufjs compiles protobuf definitions into JavaScript (JS…7.5