CVE-2026-31940

Name: CVE-2026-31940
Creator: NVD / NIST
Published: 2026-04-10T18:16:41.483+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.24%

Last modified Jun 17, 2026

CVE-2026-31940 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, in main/lp/aicc_hacp.php, user-controlled request parameters are directly used to set the PHP session ID before loading global bootstrap. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, in main/lp/aicc_hacp.php, user-controlled request parameters are directly used to set the PHP session ID before loading global bootstrap. This leads to session fixation. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.24%

15.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-384

Affected Software

Vendor	Product	Versions	Update
Chamilo	Chamilo Lms	< 1.11.38	—
Chamilo	Chamilo Lms	2.0.0	Alpha1

References

Timeline

Published: Apr 10, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-31940?

How severe is CVE-2026-31940?

CVE-2026-31940 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.

How do I fix CVE-2026-31940?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-31940?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST