What’s Vulnerable › Vulnerabilities

CVE-2025-49594: XWiki OIDC Authenticator vulnerable to creation of token for any user with just `view` right

• Severity: critical (CVSS 9.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-06 · updated 2026-10-09
• Weakness: CWE-285

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.

Affected products

• xwiki-contrib oidc: from 2.17.1, < 2.18.2

References

• https://github.com/xwiki-contrib/oidc/commit/d90d717172283aaa96bb5bb44e357f910ae64adb
• https://github.com/xwiki-contrib/oidc/security/advisories/GHSA-f2hf-pfrj-vrm7
• https://jira.xwiki.org/browse/OIDC-240
• https://www.vicarius.io/vsociety/posts/cve-2025-49594-detect-xwiki-vulnerability
• https://www.vicarius.io/vsociety/posts/cve-2025-49594-mitigate-xwiki-vulnerability

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