Dashboard / CVE-2026-33710

CVE-2026-33710

HIGH
MEDIUM Priority: 0.02 BB Relevance: 75/100
Published: 2026-04-10 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: None
A: None

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.

Weakness Classification (1)

Affected Software (11)

VendorProductVersion
chamilo chamilo_lms < 1.11.38
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0
chamilo chamilo_lms 2.0.0

References & Advisories (3)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.29%
Raw Score 0.002880
Percentile 21.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00288
2026-10-28
0.00288

Intelligence Sources

nvd ref →

External Links