What’s Vulnerable › Vulnerabilities

CVE-2023-45144: Remote code execution from login screen through unescaped URL parameter in OAuth Identity XWiki App

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-16 · updated 2026-06-17
• Weakness: CWE-79

Description

com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on OAuth authorizations. When a user logs in via the OAuth method, the identityOAuth parameters sent in the GET request is vulnerable to cross site scripting (XSS) and XWiki syntax injection. This allows remote code execution via the groovy macro and thus affects the confidentiality, integrity and availability of the whole XWiki installation. The issue has been fixed in Identity OAuth version 1.6. There are no known workarounds for this vulnerability and users are advised to upgrade.

Affected products

• xwikisas identity-oauth: from 1.0 before 1.6 — fixed in 1.6

How to fix

Upgrade to a fixed version: xwikisas identity-oauth 1.6. Check the vendor advisory for mitigations.

References

• https://github.com/xwikisas/identity-oauth/blob/master/ui/src/main/resources/IdentityOAuth/LoginUIExtension.vm#L58
• https://github.com/xwikisas/identity-oauth/commit/d805d3154b17c6bf455ddf5deb0a3461a3833bc6
• https://github.com/xwikisas/identity-oauth/commit/d805d3154b17c6bf455ddf5deb0a3461a3833bc6#diff-2ab2e0716443d790d7d798320e4a45151661f4eca5440331f4a227b29c87c188
• https://github.com/xwikisas/identity-oauth/security/advisories/GHSA-h2rm-29ch-wfmh
• https://jira.xwiki.org/browse/XWIKI-20719
• https://github.com/xwikisas/identity-oauth/blob/master/ui/src/main/resources/IdentityOAuth/LoginUIExtension.vm#L58
• https://github.com/xwikisas/identity-oauth/commit/d805d3154b17c6bf455ddf5deb0a3461a3833bc6
• https://github.com/xwikisas/identity-oauth/commit/d805d3154b17c6bf455ddf5deb0a3461a3833bc6#diff-2ab2e0716443d790d7d798320e4a45151661f4eca5440331f4a227b29c87c188
• https://github.com/xwikisas/identity-oauth/security/advisories/GHSA-h2rm-29ch-wfmh
• https://jira.xwiki.org/browse/XWIKI-20719

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