CVE-2026-34161

Katalog CVE

CVSS 5.4 · Medium EPSS 0,31%

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

Deskripsi (NVD)

Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, a Stored Cross-Site Scripting (XSS) vulnerability exists in the social post attachment upload functionality, where an authenticated user can upload a malicious HTML file containing JavaScript via the /api/social_post_attachments endpoint. The uploaded file is served back from the application at the generated contentUrl without sanitization, content type restrictions, or a Content-Disposition: attachment header, causing the JavaScript to execute in the browser within the application's origin. Because the payload is stored server-side and runs in the trusted origin, an attacker can perform session hijacking, account takeover, privilege escalation (if an admin views the link), and arbitrary actions on behalf of the victim. This issue has been fixed in version 2.0.0-RC.3.

Rincian

Terbit di NVD

14 April 2026

Terakhir diubah

24 Juli 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)

0,31% peluang dieksploitasi; lebih tinggi dari 21,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-273p-jw9w-3g22 advisory vendor
• https://github.com/chamilo/chamilo-lms/commit/7c4965e48769d1d06413836429e386816a465c7f patch
• https://github.com/chamilo/chamilo-lms/commit/da671d66a146887be3a16eabc5dcf0a92c55f7da patch
• https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3 product · release notes