PT-2026-61664 · Unknown · Chamilo Lms

CVE-2026-39878 · Published 2026-07-20 · Updated 2026-07-21

Positive Technologies (AI Summary)

CVSS v3.1

9.3

Critical

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Chamilo LMS versions prior to 1.11.40

Description A stored cross-site scripting issue exists in the user registration form. This allows an unauthenticated attacker to execute arbitrary JavaScript within the browser session of an administrator, which can result in the complete takeover of a platform administrator account.

Recommendations Update to version 1.11.40.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-39878

GHSA-GCJP-F7JM-RRRG

Affected Products

Chamilo Lms

References · 5

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39878.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-39878 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-39878 · Security Note
• https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-gcjp-f7jm-rrrg · Note
• https://twitter.com/VulmonFeeds/status/2079381304986972336 · Twitter Post