/ 
Lemonldap-NG-Portal-2.21.2
/ downloadSamlMetadata
Security Advisories (1)
CVE-2026-19349 (2026-08-16)

Lemonldap::NG::Portal versions from 2.0.0 before 2.16.9, from 2.17.0 before 2.21.5, from 2.22.0 before 2.23.3 for Perl allow authentication bypass via an OAuth2 state parameter stored as an SSO session in the GitHub and LinkedIn backends. Before redirecting to the identity provider, extractFormInfo() creates the state session with the positional call `getApacheSession( undef, 1, 0, 'GitHubState' )`. getApacheSession() takes a session id followed by a named argument hash, so the trailing arguments become that hash, `kind` defaults to SSO, and the state is written to the global session storage as a regular SSO session. Its identifier is handed to the unauthenticated visitor as the state parameter of the redirection URL. Any visitor who reaches the GitHub or LinkedIn endpoint can replay that identifier as a session cookie and obtain a valid SSO session without authenticating. The session holds neither _user nor authenticationLevel, which the shipped bootstrap configuration accepts because it grants virtual hosts a "default => accept" access rule; deployments whose rules test the user or require an authentication level are less exposed. Only configurations with the GitHub or LinkedIn authentication module enabled are affected.

NAME

downloadSamlMetadata - Script to download SAML federation metadata

SYNOPSIS

downloadSamlMetadata -m <metadata URL> -o <output file> [options]

Options:

-m, --metadata          URL of metadata document
-o, --output            Destination file
-n, --dry-run           do not replace the existing file
-v, --verbose           increase verbosity of output
-h, --help              print full documentation

OPTIONS

-m URL, --metadata=URL

Specifies the <URL> of the metadata document to import

-o FILE, --output=FILE

Specifies the <FILE> to which the metadata will be downloaded. If the destination file already exists, it will be atomically replaced.

-n, --dry-run

This option prevents the destination file from being replaced. It can be used for testing.

-v, --verbose

Increase verbosity during script execution

-h, --help

Displays the script's documentation

SEE ALSO

http://lemonldap-ng.org/

AUTHORS

Clement Oudot, <clement@oodo.net>

BUG REPORT

Use OW2 system to report bug or ask for features: https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues

DOWNLOAD

Lemonldap::NG is available at https://lemonldap-ng.org/download