Secuno
ENNL
Book demo

CVE-2026-45143

9.0 CRITICAL
  1. Published17 Sept 2026

Description

Chamilo LMS is an open-source learning management system. From 2.0.0 through at least 2.1.0, Chamilo LMS stores private Message.content without server-side sanitization and renders it as HTML in assets/vue/views/message/MessageShow.vue and public/main/template/default/message/view_message.html.twig. An authenticated low-privilege user, including a student, can directly address crafted message content to an administrator because the message creation flow permits a sender to select another user as the recipient. The content executes in the recipient's browser when the recipient opens the routine inbox or message view, without requiring a link click, and can expose session credentials or permit actions as the administrator. This vulnerability is fixed in 2.0.1.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-776158.7
Paella Player is a set of libraries to create a multi stream video player. Prior to…
CVE-2026-542538.2
TS3 Manager is modern web interface for maintaining Teamspeak3 servers. Prior to 2.2.6,…
CVE-2026-929868.8
SiYuan before 3.8.4 renders document titles as HTML in the backlink dock tree without…
CVE-2026-929858.8
SiYuan versions before 3.8.4 fail to escape bookmark labels imported from notebook…
CVE-2026-634598.7
Vendure is an open-source headless commerce platform. Prior to 3.6.5,…
CVE-2026-887928.8
The Dictionary WordPress plugin through 1.0 does not have authorisation, sanitisation…

Frequently asked

Is CVE-2026-45143 being actively exploited?

CVE-2026-45143 is not in the CISA KEV catalog.

How severe is CVE-2026-45143?

CVE-2026-45143 has a CVSS 3.1 base score of 9.0, rated critical.

How do I fix CVE-2026-45143?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-45143 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.