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Vulnerability record · CVE-2025-49594 · published 6 October 2025

CVE-2025-49594: Improper authorization vulnerability

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.

9.2 CVSS 4.0 Critical EPSS 0.44% · top 64.1% CWE-285 · Improper authorization Deferred
9.2CVSS 4.0 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
17 Jun 2026Last modified by 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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-49594), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.