CVE-2026-40291: Chamilo LMS is an open-source learning management system

Q: How do I fix CVE-2026-40291?

chamilo lms: upgrade to newer than 1.11.38. Exact commands for each OS are on this page.

Q: Is CVE-2026-40291 being exploited?

CVE-2026-40291 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-40291 affect?

CVE-2026-40291 affects chamilo lms. Severity is high (CVSS 8.8). Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, an insecure direct object modification vulnerability in the PUT /api/users/{id} endpoint allows any authenticated user with ROLE_STUDENT to escalate

Routine

HIGH 8.8UPGRADE

CVE-2026-40291 is a high-severity flaw (CVSS 8.8) affecting chamilo lms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, an insecure direct object modification vulnerability in the PUT /api/users/{id} endpoint allows any authenticated user with ROLE_STUDENT to escalate their privileges to ROLE_ADMIN by modifying the roles field on their own user record. The API Platform security expression is_granted('EDIT', object) only verifies record ownership, and the roles field is inclu

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-269, CWE-863
Published	2026-04-14
Last modified	2026-07-24

Publisher (CNA): GitHub, Inc. · Vendor: chamilo

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-14 22:16 UTCPublished CVE record published
2026-07-24 21:10 UTCUpdated Record last modified

chamilo chamilo lms UPGRADE

Affected: <= 1.11.38 · 2.0.0 alpha1 · 2.0.0 alpha2 · 2.0.0 alpha3 · 2.0.0 alpha4 · 2.0.0 alpha5 · 2.0.0 beta1 · 2.0.0 beta2

Fixed in: newer than 1.11.38

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chamilo-lms || rpm -q chamilo-lms || chamilo-lms --version

2. UPGRADE to newer than 1.11.38 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chamilo-lms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chamilo-lms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40291?

chamilo lms: upgrade to newer than 1.11.38. Exact commands for each OS are on this page.

Is CVE-2026-40291 being exploited?

CVE-2026-40291 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40291 affect?

CVE-2026-40291 affects chamilo lms. Severity is high (CVSS 8.8). Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, an insecure direct object modification vulnerability in the PUT /api/users/{id} endpoint allows any authenticated user with ROLE_STUDENT to escalate

How urgent is CVE-2026-40291?

Priority 37/100. High severity

Related CVEs

CVE-2026-32894 HIGH 7.1 UPGRADE Chamilo LMS is a learning management system
CVE-2026-31940 HIGH 7.5 UPGRADE Chamilo LMS is a learning management system
CVE-2026-31941 HIGH 7.7 UPGRADE Chamilo LMS is a learning management system
CVE-2026-33702 HIGH 7.1 UPGRADE Chamilo LMS is a learning management system
CVE-2026-33736 MEDIUM 6.5 DOWNGRADE Chamilo LMS is a learning management system

References

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