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CVE-2024-43400

XWiki Platform allows XSS through XClass name in string properties

9.1 CriticalPublic exploitFix available

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer to trick a user to follow the URL. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.49%Up 0.4 points since Aug 20, 2024
90%50%10%1%

What each source reports

CVE List Score used 9.1

XWiki Platform allows XSS through XClass name in string properties

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer to trick a user to follow the URL. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Record
CVE-2024-43400
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness
CWE-96
Updated
2026-11-02
EUVDEUVD-2024-2676 9.1

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer to trick a user to follow the URL. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Record
EUVD-2024-2676
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-wcg9-pgqv-xm5v 9.4

XWiki Platform allows XSS through XClass name in string properties

Impact

Is it possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer to trick a user to follow the URL.

Reproduction steps

  1. As a user without script or programming right, create a (non-terminal) document named " + alert(1) + " (the quotes need to be part of the name).
  2. Edit the class.
  3. Add a string property named "test".
  4. Edit using the object editor and add an object of the created class
  5. Get an admin to open <xwiki-server>/xwiki/bin/view/%22%20%2B%20alert(1)%20%2B%20%22/?viewer=display&type=object&property=%22%20%2B%20alert(1)%20%2B%20%22.WebHome.test&mode=edit where <xwiki-server> is the URL of your XWiki installation.

Patches

This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Workarounds

We're not aware of any workaround except upgrading.

References

Record
GHSA-wcg9-pgqv-xm5v
CVSS 4.0
9.4 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS 3.1
9.0 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness
CWE-79, CWE-96
Updated
2026-11-02
NVD 9.0

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer to trick a user to follow the URL. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Record
CVE-2024-43400
CVSS 3.1
9.0 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-96, CWE-79
Updated
2026-11-02
OSV 9.0

XWiki Platform allows XSS through XClass name in string properties

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer to trick a user to follow the URL. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Record
CVE-2024-43400
CVSS 3.1
9.0 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness
CWE-96
Updated
2026-11-02
OSVGHSA-wcg9-pgqv-xm5v 9.4

XWiki Platform allows XSS through XClass name in string properties

Impact

Is it possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer to trick a user to follow the URL.

Reproduction steps

  1. As a user without script or programming right, create a (non-terminal) document named " + alert(1) + " (the quotes need to be part of the name).
  2. Edit the class.
  3. Add a string property named "test".
  4. Edit using the object editor and add an object of the created class
  5. Get an admin to open <xwiki-server>/xwiki/bin/view/%22%20%2B%20alert(1)%20%2B%20%22/?viewer=display&type=object&property=%22%20%2B%20alert(1)%20%2B%20%22.WebHome.test&mode=edit where <xwiki-server> is the URL of your XWiki installation.

Patches

This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Workarounds

We're not aware of any workaround except upgrading.

References

Record
GHSA-wcg9-pgqv-xm5v
CVSS 4.0
9.4 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS 3.1
9.0 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness
CWE-79, CWE-96
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.xwiki.platform:xwiki-platform-oldcore
Maven
 1.1.2 up to 14.10.21
14.10.21
org.xwiki.platform:xwiki-platform-oldcore
Maven
 15.0-rc-1 up to 15.5.5
15.5.5
org.xwiki.platform:xwiki-platform-oldcore
Maven
 15.6-rc-1 up to 15.10.6
15.10.6
org.xwiki.platform:xwiki-platform-oldcore
Maven
 16.0.0-rc-1 to 16.0.0-rc-1
16.0.0
org.xwiki.platform:xwiki-platform-oldcore
Maven
 16.0.0-rc-1 up to 16.0.0
16.0.0

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubrain321654/CVE-2024-434002025-12-16
PoC in GitHubrain321654/yasa-cve-2024-43400-main12025-12-15

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-43400 is a critical vulnerability (CVSS 9.1) in Xwiki, published August 19, 2024. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. Fixed in org.xwiki.platform:xwiki-platform-oldcore 14.10.21.

References

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