CVE-2024-27524Public exploitNetwork attack vector

Privilege escalation via unsanitized attachment filename

Published Nov 1, 2024 · Updated Nov 4, 2024

Stored cross-site scripting in Chamilo LMS 1.11.26 allows remote authenticated users to run script in another user’s browser via a ticket attachment. TicketManager::get_ticket_detail_by_id reads a stored attachment filename and inserts it directly into an HTML link without XSS filtering. A user with ticket-creation access must upload a crafted filename, and the script runs when another user views the ticket, enabling actions in that viewer’s session.

CVSS severity7.1
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Chamilo LMS 1.11.26 allows remote authenticated users to run script in another user’s browser via a ticket attachment. TicketManager::get_ticket_detail_by_id reads a stored attachment filename and inserts it directly into an HTML link without XSS filtering. A user with ticket-creation access must upload a crafted filename, and the script runs when another user views the ticket, enabling actions in that viewer’s session.

The record

CVE
CVE-2024-27524
Published
Nov 1, 2024
Updated
Nov 4, 2024
Vendor
Chamilo
Product
Chamilo LMS
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.11.26

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chamilo · Chamilo LMSversion=1.11.26

Published CVSS scores

7.1CISA-ADPCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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