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

Quick assessment

Affected
xwiki-contrib oidc
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenID Connect（OIDC）是XWiki Contrib开源的一个库。使 XWiki 成为任何应用程序都可以重用的身份提供者。 OpenID Connect（OIDC） 2.17.1版本至2.18.2之前版本存在授权问题漏洞，该漏洞源于具有查看权限的用户可以创建其他用户令牌，可能导致任意用户身份验证。

AI Predicted 9.8 Difficulty: Easy EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-49594

Vulnerability Information
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Vulnerability Title
XWiki OIDC Authenticator vulnerable to creation of token for any user with just `view` right
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenID Connect 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenID Connect（OIDC）是XWiki Contrib开源的一个库。使 XWiki 成为任何应用程序都可以重用的身份提供者。 OpenID Connect（OIDC） 2.17.1版本至2.18.2之前版本存在授权问题漏洞，该漏洞源于具有查看权限的用户可以创建其他用户令牌，可能导致任意用户身份验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
xwiki-contrib oidc >= 2.17.1, < 2.18.2 -

II. Public POCs for CVE-2025-49594

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III. Intelligence Information for CVE-2025-49594

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Vendor Advisories for CVE-2025-49594 (1)

IV. Related Vulnerabilities

Same product: oidc
Same vendor: xwiki-contrib
Same weakness: CWE-285

V. Comments for CVE-2025-49594

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