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Chamilo CVE-2025-50199

CRITICAL
Server-Side Request Forgery (SSRF) (CWE-918)
2026-03-02 security-advisories@github.com
9.1
CVSS 3.1 · GitHub Advisory
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS 9.1 with PoC. Part of a series of Chamilo vulnerabilities (code injection, SQL injection, SSRF, deserialization).

Exploit ScenarioDerived

An attacker uses the SSRF to probe internal services, access cloud metadata, or scan the internal network.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Chamilo LMS prior to 1.11.30 has a blind SSRF vulnerability enabling internal network reconnaissance from the learning platform.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:55 CVSS 9.1

Blind SSRF in Chamilo LMS enables internal network access.

RemediationAI

Update Chamilo.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Chamilo < 1.11.30 has a CWE-918 blind SSRF that allows attackers to make the LMS server send requests to internal network resources.

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  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

Lifecycle Timeline

2
PoC Detected
Mar 03, 2026 - 18:47 vuln.today
Public exploit code
CVE Published
Mar 02, 2026 - 16:16 nvd
CRITICAL 9.1

DescriptionGitHub Advisory

Chamilo is a learning management system. Prior to version 1.11.30, there is a blind SSRF vulnerability in /index.php via the POST openid_url parameter. This issue has been patched in version 1.11.30.

Executive ViewAI

Why It Matters

A critical server-side request forgery (SSRF) vulnerability affects Chamilo learning management systems prior to version 1.11.30, allowing attackers to bypass network controls and access internal resources. Organizations running affected Chamilo instances face immediate risk of data exfiltration, lateral movement, and potential compromise of connected internal systems.

Business Impact: Severe
Compensating Controls

Implement Web Application Firewall (WAF) rules to block or sanitize POST requests containing the openid_url parameter at /index.php; restrict outbound network access from Chamilo servers to only required external endpoints using egress filtering; disable OpenID functionality if not required; place Chamilo in isolated network segment with limited access to internal resources and databases; implement network-based SSRF detection monitoring outbound requests from application servers to internal IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 127.0.0.1).

Threat Intelligence Overview

EPSS Score
0.1%
Top 81% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC Yes
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

66
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +46
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*
CVE-2023-34960 CRITICAL POC
9.8 Aug 01

A command injection vulnerability in the wsConvertPpt component of Chamilo v1.11.* up to v1.11.18 allows attackers to ex

CVE-2025-50187 CRITICAL POC
9.8 Mar 02

Chamilo LMS prior to 1.11.28 has a code injection through SOAP request parameters enabling remote code execution.

CVE-2025-50192 CRITICAL POC
9.8 Mar 02

Chamilo LMS prior to 1.11.30 has a time-based SQL injection in a different endpoint, providing an additional database ex

CVE-2025-50190 CRITICAL POC
9.8 Mar 02

Chamilo LMS prior to 1.11.30 has an error-based SQL injection enabling database extraction.

CVE-2023-3545 CRITICAL POC
9.8 Nov 28

Improper sanitisation in `main/inc/lib/fileUpload.lib.php` in Chamilo LMS <= v1.11.20 on Windows and Apache installation

CVE-2023-3533 CRITICAL POC
9.8 Nov 28

Path traversal in file upload functionality in `/main/webservices/additional_webservices.php` in Chamilo LMS <= v1.11.20

CVE-2023-3368 CRITICAL POC
9.8 Nov 28

Command injection in `/main/webservices/additional_webservices.php` in Chamilo LMS <= v1.11.20 allows unauthenticated at

CVE-2021-35414 CRITICAL POC
9.8 Dec 03

Chamilo LMS v1.11.x was discovered to contain a SQL injection via the doc parameter in main/plagiarism/compilatio/upload

CVE-2021-34187 CRITICAL POC
9.8 Jun 28

main/inc/ajax/model.ajax.php in Chamilo through 1.11.14 allows SQL Injection via the searchField, filters, or filters2 p

CVE-2019-13082 CRITICAL POC
9.8 Jun 30

Chamilo LMS 1.11.8 and 2.x allows remote code execution through an lp_upload.php unauthenticated file upload feature. Ra

CVE-2023-4220 MEDIUM POC
6.1 Nov 28

Unrestricted file upload in big file upload functionality in `/main/inc/lib/javascript/bigupload/inc/bigUpload.php` in C

CVE-2025-50189 HIGH POC
8.8 Mar 02

Chamilo is a learning management system. [CVSS 8.8 HIGH]

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