Chamilo LMS Stored XSS via Survey Answer Submission in reporting.php
Chamilo LMS before 1.11.42 and 3.0.0 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious script payloads into survey answers by computing deterministic invitation codes and bypassing authorization checks in the survey submission endpoint. Attackers can submit crafted answers containing unescaped HTML rendered in reporting views to execute arbitrary scripts in the browser sessions of teachers or administrators, enabling persistent backdoor account creation by exploiting the victim's authenticated session.
CVE-2026-82535
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-82535
chamilo-lms
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/chamilo/chamilo-lms",
"vendor": "chamilo",
"product": "chamilo-lms",
"versions": [
{
"status": "affected",
"version": "1.11.0",
"versionType": "semver",
"lessThanOrEqual": "1.11.40"
},
{
"status": "affected",
"version": "2.0.0",
"versionType": "semver",
"lessThanOrEqual": "2.0.3"
},
{
"status": "unaffected",
"version": "1.11.42",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "3.0.0",
"versionType": "semver"
}
],
"packageURL": "pkg:github/chamilo/chamilo-lms",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-82535
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #5578 · Revision 1
- Added to Heist Feed
- Publisher date