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CVE-2026-33710

Chamilo LMS has Weak REST API Key Generation (Predictable)

Published: Apr 10, 2026Updated: Apr 16, 2026 Sources: CVE List NVDCWE-330
7.5HIGH
NVD MITRE
EPSS Score
0.3%
Top 79.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, REST API keys are generated using md5(time() + (user_id * 5) - rand(10000, 10000)). The rand(10000, 10000) call always returns exactly 10000 (min == max), making the formula effectively md5(timestamp + user_id*5 - 10000). An attacker who knows a username and approximate key creation time can brute-force the API key. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-330

Affected Products

chamilo-lmschamilo
On-premWeb App
Enterprise Software / collaboration-groupware
chamilo lmschamilo
On-premWeb App
Enterprise Software / itsm-monitoring
chamilooss-projectEnterprise Softwareaka chamilo-lms

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-rpmg-j327-mr39
github.com
https://github.com/chamilo/chamilo-lms/commit/4448701bb8ec557e94ef02d19c72cbe9c49c2d09
github.com
https://github.com/chamilo/chamilo-lms/commit/e7400dd840586ae134b286d0a2374f3d269a9a9d
github.com

Timeline

Published
Apr 10, 2026
Last Updated
Apr 16, 2026

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