What is CVE-2023-45144?

CVE-2023-45144 is a critical-severity cross-site scripting (XSS) vulnerability in com.xwiki.identity-oauth:identity-oauth-ui (maven), affecting versions >= 1.0, < 1.6. It is fixed in 1.6. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.

How severe is CVE-2023-45144?

CVE-2023-45144 has a CVSS score of 10.0 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which versions of com.xwiki.identity-oauth:identity-oauth-ui are affected by CVE-2023-45144?

com.xwiki.identity-oauth:identity-oauth-ui (maven) versions >= 1.0, < 1.6 is affected.

Is there a fix for CVE-2023-45144?

Yes. CVE-2023-45144 is fixed in 1.6. Upgrade to this version or later.

Is CVE-2023-45144 exploitable, and should I be worried?

Whether CVE-2023-45144 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2023-45144 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

How do I fix CVE-2023-45144?

Upgrade com.xwiki.identity-oauth:identity-oauth-ui to 1.6 or later.

CVE-2023-45144

Q: How severe is CVE-2023-45144?

CVE-2023-45144 has a CVSS score of 10.0 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Q: Which versions of com.xwiki.identity-oauth:identity-oauth-ui are affected by CVE-2023-45144?

com.xwiki.identity-oauth:identity-oauth-ui (maven) versions >= 1.0, < 1.6 is affected.

Q: Is there a fix for CVE-2023-45144?

Yes. CVE-2023-45144 is fixed in 1.6. Upgrade to this version or later.

Q: Is CVE-2023-45144 exploitable, and should I be worried?

Whether CVE-2023-45144 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2023-45144 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2023-45144?

Upgrade com.xwiki.identity-oauth:identity-oauth-ui to 1.6 or later.

Summary

XWiki Identity Oauth Privilege escalation (PR)/remote code execution from login screen through unescaped URL parameter

Workarounds

There are no known workarounds besides upgrading.

References

Are there any links users can visit to find out more?

Original report: https://jira.xwiki.org/browse/XWIKI-20719

Impact

When login via the OAuth method, the identityOAuth parameters, sent in a GET request is vulnerable to 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 vulnerability is in this part of the code.

Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.

CVE-2023-45144 has a CVSS score of 10.0 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.6); upgrading removes the vulnerable code path.

Affected versions

com.xwiki.identity-oauth:identity-oauth-ui (>= 1.0, < 1.6)

Security releases

com.xwiki.identity-oauth:identity-oauth-ui → 1.6 (maven)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

The issue has been fixed in Identity OAuth version 1.6 by https://github.com/xwikisas/identity-oauth/commit/d805d3154b17c6bf455ddf5deb0a3461a3833bc6 . The fix is in the content of the IdentityOAuth/LoginUIExtension file

Frequently Asked Questions

What is CVE-2023-45144? CVE-2023-45144 is a critical-severity cross-site scripting (XSS) vulnerability in com.xwiki.identity-oauth:identity-oauth-ui (maven), affecting versions >= 1.0, < 1.6. It is fixed in 1.6. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
How severe is CVE-2023-45144? CVE-2023-45144 has a CVSS score of 10.0 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which versions of com.xwiki.identity-oauth:identity-oauth-ui are affected by CVE-2023-45144? com.xwiki.identity-oauth:identity-oauth-ui (maven) versions >= 1.0, < 1.6 is affected.
Is there a fix for CVE-2023-45144? Yes. CVE-2023-45144 is fixed in 1.6. Upgrade to this version or later.
Is CVE-2023-45144 exploitable, and should I be worried? Whether CVE-2023-45144 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2023-45144 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2023-45144? Upgrade com.xwiki.identity-oauth:identity-oauth-ui to 1.6 or later.