XWiki Platform privilege escalation (PR)/RCE from account through Invitation subject/message
Impact
Any user who can view Invitation.WebHome can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This can be reproduced with the following steps:
- Open the invitation application (Invitation.WebHome).
- Set the subject to
{{cache}}{{groovy}}new File("/tmp/exploit.txt").withWriter { out -> out.println("Attacked from invitation!"); }{{/groovy}}{{/cache}} - Click "Preview"
Patches
The vulnerability has been patched on XWiki 14.4.8, 15.2-rc-1, and 14.10.6.
Workarounds
The vulnerability can be patched manually by applying the patch on Invitation.InvitationCommon and Invitation.InvitationConfig.
References
- https://jira.xwiki.org/browse/XWIKI-20421
- https://github.com/xwiki/xwiki-platform/commit/ff1d8a1790c6ee534c6a4478360a06efeb2d3591
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
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.xwiki.platform:xwiki-platform-invitation-ui | >= 2.5-m-1, < 14.4.8, >= 14.5, < 14.10.6, >= 15.0-rc-1, < 15.2-rc-1 | 14.4.8, 14.10.6, 15.2-rc-1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L- Weakness (CWE)
CWE-94, CWE-95- Platform
- Java / Kotlin (Maven)
- Package
org.xwiki.platform:xwiki-platform-invitation-ui- Disclosed
- 18.08.2023
- Updated
- 11.10.2026 13:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-7954-6m9q-gpvf - CC BY 4.0
Vulnerability history: org.xwiki.platform:xwiki-platform-invitation-ui
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 04.2023 08.2023
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 1
Disclosures per year
- 2023: 3
- 2024: 0
- 2025: 0
- 2026: 0
-
XWiki Platform privilege escalation (PR)/RCE from account through Invitation subject/message this entry
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