CVE-2026-26993
MEDIUMFlare < 1.7.1 - Stored Cross-Site Scripting via SVG/HTML/XML File Upload
Title source: llmExploitation Summary
EIP tracks 1 public exploit for CVE-2026-26993. PoCs published by G3XAR.
AI-analyzed exploit summary The repository provides a functional proof-of-concept for CVE-2026-26993, demonstrating a stored XSS vulnerability in Flare versions <1.7.0 via malicious SVG file uploads. The PoC includes a detailed payload and steps to exfiltrate sensitive data.
Description
Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Versions 1.7.0 and below allow users to upload files without proper content validation or sanitization. By embedding malicious JavaScript within an SVG (or other active content formats such as HTML or XML), an attacker can achieve script execution in the context of the application's origin when a victim views the file in “raw” mode. This results in a stored Cross-Site Scripting (XSS) vulnerability that can be exploited to exfiltrate user data. This issue has been fixed in version 1.7.1.
Exploits (1)
The repository provides a functional proof-of-concept for CVE-2026-26993, demonstrating a stored XSS vulnerability in Flare versions <1.7.0 via malicious SVG file uploads. The PoC includes a detailed payload and steps to exfiltrate sensitive data.
References (3)
Scores
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N