CVE-2026-33702

Status: AnalyzedHigh (7.1)—

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, Chamilo LMS contains an Insecure Direct Object Reference (IDOR) vulnerability in the Learning Path progress saving endpoint. The file lp_ajax_save_item.php accepts a uid (user ID) parameter directly from $_REQUEST and uses it to load and modify another user's Learning Path progress — including score, status, completion, and time — without verifying that the requesting user matches the target user ID. Any authenticated user enrolled in a course can overwrite another user's Learning Path progress by simply changing the uid parameter in the request. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Base score: 7.1

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.43%
Percentile among all scored CVEs: 35
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement75 %
Primary impactT1565.002 Transmitted Data Manipulationimpact85 %
Secondary impactT1078.001 Default Accountsstealth · persistence · privilege escalation · initial access65 %

IDOR en endpoint de red (AV:N, PR:L) permite modificar datos de otros usuarios sin verificación. Acceso remoto con privilegios autenticados típico de T1210. Impacto primario: manipulación de datos educativos (scores, estado). Secundario: escalada de privilegios via modificación de rol/estado.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Vulnerability Scanning Threat Intelligence Program Privileged Account Management Password Policies Network Segmentation Multi-factor Authentication

Affected technologies (1)

Chamilo — Chamilo LMS

CWEs

CWE-639

References

Raw JSON (NVD)

Show

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