XWiki OIDC Authenticator: Users with "view" access can create tokens for any users they can view

KRITISCH 9.2CVE-2025-49594 · GHSA-f2hf-pfrj-vrm7 · Published 06/10/2025 · updated 09/10/2026

Kurz gesagt

CVE-2025-49594 ist eine Schwachstelle (KRITISCH (CVSS 9.2)) in org.xwiki.contrib.oidc:oidc-authenticator.
Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.44%, höher als bei 38.4% aller Schwachstellen.
Abhilfe: auf 2.18.2 oder neuer aktualisieren.

Package	Affected versions	Patched versions
org.xwiki.contrib.oidc:oidc-authenticator Maven	`≥ 2.17.1, < 2.18.2`	`2.18.2`

Description

Impact

Anyone with VIEW access to a user profile can create a token for that user. If that XWiki instance is configured to allow token authentication, it allows authentication with any user (since users are very commonly viewable, at least to other registered users).

Patches

Version 2.18.2.

Workarounds

The only workaround is to disable token access.

References

For more information

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NVD description

XWiki OIDC has various tools to manipulate OpenID Connect protocol in XWiki. Starting in version 2.17.1 and prior to version 2.18.2, anyone with VIEW access to a user profile can create a token for that user. If that XWiki instance is configured to allow token authentication, it allows authentication with any user (since users are very commonly viewable, at least to other registered users). Version 2.18.2 contains a patch. As a workaround, disable token access.