CVE-2023-40176
CriticalCVSS 9.0Exploitation Probability (EPSS)
Very high risk100th percentile - higher than 100% of all known CVEs
Summary
XWiki Platform has a stored XSS vulnerability that can be exploited by registered users by setting a malicious payload in the time zone user preference. Although the time zone is selected from a dropdown, it can still be set using JavaScript or the appropriate URL.
Risk Assessment
An attacker can execute malicious code in the context of other users' browsers, leading to information theft and potential escalation of privileges.
Recommendation
It is recommended to upgrade to XWiki version 14.10.5 or 15.1RC1 to mitigate this vulnerability.
Other vulnerabilities in XWiki Platform
See all- CVE-2026-33137Critical
A vulnerability in XWiki Platform versions starting with 15.10.6 and prior to 18.1.0-rc-1, 17.10.3, 17.4.9, and 16.10.17. The POST /wikis/{wikiName} API performs a XAR import without authentication or authorization checks, allowing an unauthenticated attacker to create or update documents in the target wiki.
- CVE-2026-23734Critical
A vulnerability in XWiki Platform allows reading configuration files by manipulating the resource parameter in ssx and jsx endpoints, leading to Path Traversal. Affects versions prior to 18.1.0-rc-1, 17.10.3, 17.4.9, and 16.10.17.
- CVE-2026-33229Critical
XWiki Platform is a wiki platform. Prior to versions 17.4.8 and 17.10.1, an improperly protected scripting API allows users with script right to bypass the Velocity sandbox and execute arbitrary Python scripts, leading to full access to the XWiki instance.
- CVE-2023-40573Critical
XWiki Platform has a vulnerability that allows remote code execution by an attacker with edit rights on the wiki. It exploits a flaw in the job scheduler and an issue with content author authorization. This vulnerability has been patched in XWiki versions 14.10.9 and 15.4RC1.
- CVE-2023-40572Critical
XWiki Platform is vulnerable to a CSRF attack in the create action, allowing remote code execution by users with appropriate permissions. If a user with script rights sees a specific log message, the XWiki installation is at risk.
- CVE-2023-40177Critical
XWiki Platform allows registered users to execute arbitrary scripts in the content field of their profile page, leading to rights escalation. This issue has been present since version 4.3M2 when support for the content field was added in the AppWithinMinutes application.
- CVE-2023-37914Critical
XWiki Platform allows users who can view `Invitation.WebHome` to execute arbitrary script macros, including Groovy and Python, leading to remote code execution. This vulnerability allows unrestricted read and write access to all wiki contents.
- CVE-2023-37462Critical
XWiki Platform has a vulnerability due to improper escaping in the `SkinsCode.XWikiSkinsSheet` document. This allows attackers to execute arbitrary script macros, including Groovy and Python, leading to remote code execution and unrestricted access to wiki content.
- CVE-2023-37277Critical
XWiki Platform has a vulnerability that allows remote code execution via a cross-site request forgery (CSRF) attack using the REST API. Exploitation of this flaw by a user with programming rights can impact the integrity, availability, and confidentiality of the entire XWiki installation.
- CVE-2023-36470Critical
XWiki Platform allows attackers to inject XWiki syntax and Velocity code by editing documents with an icon set, leading to remote code execution. Various attack vectors, including the use of the icon set in HTML, can be exploited.
Original NVD description (English source)
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any registered user can exploit a stored XSS through their user profile by setting the payload as the value of the time zone user preference. Even though the time zone is selected from a drop down (no free text value) it can still be set from JavaScript (using the browser developer tools) or by calling the save URL on the user profile with the right query string. Once the time zone is set it is displayed without escaping which means the payload gets executed for any user that visits the malicious user profile, allowing the attacker to steal information and even gain more access rights (escalation to programming rights). This issue is present since version 4.1M2 when the time zone user preference was introduced. The issue has been fixed in XWiki 14.10.5 and 15.1RC1.