Medium severity · published Oct 21, 2026
CVE-2026-114389
Chamilo LMS 2.0.0-alpha.4 before 2.0.0-RC.3 Missing Authorization via openAnswerGrade
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
Chamilo LMS from 2.0.0-alpha.4 before 2.0.0-RC.3 contains a missing authorization vulnerability in AiController::openAnswerGrade that allows any authenticated user to obtain AI grading of other students' exam attempts. Attackers can enumerate exeId and questionId values sent to the open_answer_grade endpoint to expose other students' answers through feedback and consume AI quota.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% 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.4 before 2.0.0-RC.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-114389
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-114389
github.com
https://github.com/chamilo/chamilo-lms/blob/v2.0.0-RC.2/src/CoreBundle/Controller/AiController.php#L525-L703
github.com
https://github.com/chamilo/chamilo-lms/commit/2861afd4896ff898a950302f2c00f44726fa6f0a
github.com
https://github.com/chamilo/chamilo-lms/issues/7671
github.com
https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3
www.vulncheck.com
https://www.vulncheck.com/advisories/chamilo-lms-2.0.0-alpha.4-before-2.0.0-rc.3-missing-authorization-via-openanswergrade
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