High 8.6Published Apr 14, 2026

CVE-2026-34160Chamilo LMS: Unauthenticated SSRF via PENS Plugin allows attacker to probe internal network and reach cloud metadata services

Updated under an hour ago (Oct 27, 2026, 6:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for chamilo-lms

Exploited in the last 30 days

Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the PENS (Package Exchange Notification Services) plugin endpoint at public/plugin/Pens/pens.php is accessible without authentication and accepts a user-controlled package-url parameter that the server fetches using curl without filtering private or internal IP addresses, enabling unauthenticated Server-Side Request Forgery (SSRF). An attacker can exploit this to probe internal network services, access cloud metadata endpoints (such as 169.254.169.254) to steal IAM credentials and sensitive instance metadata, or trigger state-changing operations on internal services via the receipt and alerts callback parameters. No authentication is required to exploit either SSRF vector, significantly increasing the attack surface. This issue has been fixed in version 2.0.0-RC.3.

CVSS: 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness (CWE): CWE-306, CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

chamilo chamilo-lms chamilo:lms (from the name)	before 2.0-RC.3	CNA record
chamilo chamilo_lms chamilo:chamilo_lms	through 1.11.38; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; and 3 more ranges	NVD

References

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-g2xj-4cch-j276	x-refsource-confirm, vendor-advisory
https://github.com/chamilo/chamilo-lms/commit/de4058d76fac2413afd023b1ec942e8e79579011	x-refsource-misc, patch
https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.