CVE-2026-26993

Katalog CVE

CVSS 5.4 · Medium EPSS 0,38%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada flintsh flare. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

20 Februari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

5.4 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

0,38% peluang dieksploitasi; lebih tinggi dari 29,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/FlintSH/Flare/security/advisories/GHSA-q8fp-w6m5-4gjm exploit · advisory vendor
• https://github.com/FlintSH/Flare/commit/7763d7b954799552f287ab9260bb1353f8880163 patch
• https://github.com/FlintSH/Flare/releases/tag/v1.7.1 product · release notes