Medium severity · published Apr 10, 2026
CVE-2026-32893
Chamilo LMS has Reflected XSS via Unsanitized http_build_query() in Exercise Question List Pagination
5.4
CVSS
0.1%
EPSS
No
On KEV
Description
Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, a Reflected Cross-Site Scripting (XSS) vulnerability in the exercise question list admin panel allows an attacker to execute arbitrary JavaScript in an authenticated teacher's browser. The pagination code merges all $_GET parameters via array_merge() and outputs the result via http_build_query() directly into HTML href attributes without htmlspecialchars() encoding. This vulnerability is fixed in 2.0.0-RC.3.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
chamilo-lms · chamilo
>= 2.0.0-alpha.1, < 2.0.0-RC.3 · source: vendor
CL
Chamilo Lms · Chamilo
2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; +4 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-32893
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-32893
Patch
https://github.com/chamilo/chamilo-lms/commit/72bc403f89b1ebb73a139f8f6cf0478857592276
Vendor Advisory
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-37jh-g64j-88mc
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