Summary
XWiki Platform vulnerable to stored cross-site scripting in ClassEditSheet page via name parameters
Workarounds
The issue can be fixed by updating AppWithinMinutes.ClassEditSheet with this patch.
References
- https://github.com/xwiki/xwiki-platform/commit/1b87fec1e5b5ec00b7a8c3c3f94f6c5e22547392#diff-79e725ec7125cced7d302e1a1f955a76745af26ef28a148981b810e85335d302
- https://jira.xwiki.org/browse/XWIKI-20365
For more information
If you have any questions or comments about this advisory:
- Open an issue in Jira XWiki.org
- Email us at Security Mailing List
Attribution
This vulnerability has been reported on Intigriti by René de Sain @renniepak.
Impact
A stored XSS can be exploited by users with edit rights by adding a AppWithinMinutes.FormFieldCategoryClass class on a page and setting the payload on the page title.
Then, any user visiting /xwiki/bin/view/AppWithinMinutes/ClassEditSheet executes the payload.
See https://jira.xwiki.org/browse/XWIKI-20365 for me details.
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-2023-35153 has a CVSS score of 9.0 (Critical). The vector is network-reachable, low privileges required, and user interaction required. 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 (14.4.8, 14.10.4, 15.0); upgrading removes the vulnerable code path.
Affected versions
Security releases
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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The issue has been patched on XWiki 14.4.8, 14.10.4, and 15.0 ?
Frequently Asked Questions
- What is CVE-2023-35153? CVE-2023-35153 is a critical-severity cross-site scripting (XSS) vulnerability in org.xwiki.platform:xwiki-platform-appwithinminutes-ui (maven), affecting versions >= 5.4.4, < 14.4.8. It is fixed in 14.4.8, 14.10.4, 15.0. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
- How severe is CVE-2023-35153? CVE-2023-35153 has a CVSS score of 9.0 (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 org.xwiki.platform:xwiki-platform-appwithinminutes-ui are affected by CVE-2023-35153? org.xwiki.platform:xwiki-platform-appwithinminutes-ui (maven) versions >= 5.4.4, < 14.4.8 is affected.
- Is there a fix for CVE-2023-35153? Yes. CVE-2023-35153 is fixed in 14.4.8, 14.10.4, 15.0. Upgrade to this version or later.
- Is CVE-2023-35153 exploitable, and should I be worried? Whether CVE-2023-35153 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-2023-35153 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-2023-35153?
- Upgrade
org.xwiki.platform:xwiki-platform-appwithinminutes-uito 14.4.8 or later - Upgrade
org.xwiki.platform:xwiki-platform-appwithinminutes-uito 14.10.4 or later - Upgrade
org.xwiki.platform:xwiki-platform-appwithinminutes-uito 15.0 or later
- Upgrade