CVE-2026-34602

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Source
https://cve.org/CVERecord?id=CVE-2026-34602
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34602.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-34602
Aliases
  • GHSA-x373-8j9j-g5pj
Published
2026-04-14T21:29:06.585Z
Modified
2026-07-08T08:12:51.318617593Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
Summary
Chamilo LMS: IDOR in /api/course_rel_users Allows Unauthorized Enrollment of Arbitrary Users into Courses
Details

Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the /api/courserelusers endpoint is vulnerable to Insecure Direct Object Reference (IDOR), allowing an authenticated attacker to modify the user parameter in the request body to enroll any arbitrary user into any course without proper authorization checks. The backend trusts the user-supplied input for the user field and performs no server-side verification that the requester owns the referenced user ID or has permission to act on behalf of other users. This enables unauthorized manipulation of user-course relationships, potentially granting unintended access to course materials, bypassing enrollment controls, and compromising platform integrity. This issue has been fixed in version 2.0.0-RC.3.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34602.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-639"
    ]
}
References

Affected packages

Git / github.com/chamilo/chamilo-lms

Affected ranges

Type
GIT
Repo
https://github.com/chamilo/chamilo-lms
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2a9f060fa9d50fc9a92ed93af774d2619642df92
Fixed
bd2ba34c2e74475587e38c74c90c2934e69c8779
Fixed
c9c30cdc48afae57cd6ab012ae2eceafd351a40e
Database specific 
{
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.11.38"
        }
    ]
}

Affected versions

Other
CHAMILO_1_8_7_ALPHA_1
CHAMILO_1_8_7_ALPHA_2
CHAMILO_1_8_7_RC2
CHAMILO_1_8_7_RC_1
CHAMILO_1_8_7_STABLE
CHAMILO_1_8_7_STABLE_BIS
CHAMILO_1_8_8_2_RC_1
CHAMILO_1_8_8_2_STABLE
CHAMILO_1_8_8_2_STABLE_2
CHAMILO_1_8_8_4_STABLE
CHAMILO_1_8_8_ALPHA
CHAMILO_1_8_8_BETA_1
CHAMILO_1_8_8_BETA_2
CHAMILO_1_9_0_ALPHA_1
CHAMILO_1_9_0_ALPHA_2
CHAMILO_1_9_0_ALPHA_4
CHAMILO_1_9_0_PRE_ALPHA
CHAMILO_1_9_0_RC_1
CHAMILO_1_9_0_STABLE_2
CHAMILO_1_9_0_STABLE_3
CHAMILO_1_9_2_STABLE
CHAMILO_1_9_2_STABLE_QUARTER
CHAMILO_1_9_4_ALPHA_1
CHAMILO_1_9_4_RC_1
CHAMILO_1_9_4_STABLE
CHAMILO_1_9_6_RC_1
CHAMILO_1_9_6_RC_2
CHAMILO_1_9_6_STABLE
CHAMILO_1_8_8.*
CHAMILO_1_8_8.3_STABLE_4
v1.*
v1.11.6-alpha.1
v1.8.6.1
v1.9.8
v2.*
v2.0.0-RC.1
v2.0.0-RC.2
v2.0.0-alpha.1
v2.0.0-alpha.2
v2.0.0-alpha.3
v2.0.0-alpha.4
v2.0.0-alpha.5
v2.0.0-beta.1
v2.0.0-beta.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34602.json"