EUVD-2025-209408Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
Lifecycle Timeline
4DescriptionGitHub Advisory
Chamilo LMS is a learning management system. From 1.11.0 to 2.0-beta.1, anyone can trigger a malicious redirect through the use of the redirect parameter to /login. This vulnerability is fixed in 2.0-beta.2.
AnalysisAI
Open redirect vulnerability in Chamilo LMS login endpoint allows unauthenticated remote attackers to redirect users to arbitrary external websites via the redirect parameter, affecting versions 1.11.0 through 2.0-beta.1. The vulnerability was patched in 2.0-beta.2 and subsequent releases. No public exploit code or active exploitation has been confirmed, but the attack requires no authentication or special complexity and could be weaponized for phishing campaigns.
Technical ContextAI
Chamilo LMS is an open-source learning management system. The vulnerability resides in the login functionality at the /login endpoint, specifically in improper validation of the redirect parameter (CWE-601: URL Redirection to Untrusted Site). The affected versions (1.11.0 to 2.0-beta.1) fail to sanitize or validate the redirect parameter before performing server-side redirects, allowing attackers to inject arbitrary URLs. This is a classic open redirect vulnerability where user-supplied input is used directly in HTTP redirection logic without allowlisting or validation. The CPE identifier cpe:2.3:a:chamilo:chamilo-lms indicates all variants of the Chamilo LMS product across all platforms and configurations within the vulnerable version range are affected.
RemediationAI
Vendor-released patch: upgrade to Chamilo LMS 2.0-beta.2 or later, with ENISA confirming safety in version 2.0.0-RC.3 and beyond. The upstream fix is confirmed in commit 73ae6293adaa6098374bc22625342dbae5cbc446 which implements proper validation of the redirect parameter. Organizations unable to upgrade immediately should implement network-level controls such as restricting login redirects to internal domains only, or review and restrict the use of the redirect parameter at the web application firewall level. Refer to the GitHub security advisory at https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-m82x-prv3-rwwv and the fix commit at https://github.com/chamilo/chamilo-lms/commit/73ae6293adaa6098374bc22625342dbae5cbc446 for implementation details.
More in Open Redirect
View allA malicious third-party can give a crafted "ssh://..." URL to an unsuspecting victim, and an attempt to visit the URL ca
GFI Kerio Control versions 9.2.5 through 9.4.5 contain an HTTP response splitting vulnerability in the dest parameter of
PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect
Multiple open redirect vulnerabilities in Apache Struts 2.0.0 through 2.3.15 allow remote attackers to redirect users to
Open redirect vulnerability in age-verification.php in the Age Verification plugin 0.4 and earlier for WordPress allows
Open redirect vulnerability in Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.29, 8.x before 8.0.0.18, 9.0 b
Vulnerability in the Oracle Applications Framework component of Oracle E-Business Suite (subcomponent: Popup windows (li
Unspecified vulnerability in the Oracle Application Server Single Sign-On component in Oracle Fusion Middleware 10.1.4.3
Flarum is open source discussion platform software. Rated medium severity (CVSS 6.5), this vulnerability is remotely exp
Open redirect vulnerability in Novius OS 5.0.1 (Elche) allows remote attackers to redirect users to arbitrary web sites
Open redirect vulnerability in the Redirect function in stageshow_redirect.php in the StageShow plugin before 5.0.9 for
Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link. Rated crit
Share
External POC / Exploit Code
Leaving vuln.today