CVE-2023-37462
Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') in org.xwiki.platform:xwiki-platform-skin-ui
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Improper escaping in the document SkinsCode.XWikiSkinsSheet leads to an injection vector from view right on that document to programming rights, or in other words, it is possible to execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The attack works by opening a non-existing page with a name crafted to contain a dangerous payload. It is possible to check if an existing installation is vulnerable. See the linked GHSA for instructions on testing an installation. This issue has been patched in XWiki 14.4.8, 14.10.4 and 15.0-rc-1. Users are advised to upgrade. The fix commit d9c88ddc can also be applied manually to the impacted document SkinsCode.XWikiSkinsSheet and users unable to upgrade are advised to manually patch their installations.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') in org.xwiki.platform:xwiki-platform-skin-ui
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Improper escaping in the document SkinsCode.XWikiSkinsSheet leads to an injection vector from view right on that document to programming rights, or in other words, it is possible to execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The attack works by opening a non-existing page with a name crafted to contain a dangerous payload. It is possible to check if an existing installation is vulnerable. See the linked GHSA for instructions on testing an installation. This issue has been patched in XWiki 14.4.8, 14.10.4 and 15.0-rc-1. Users are advised to upgrade. The fix commit d9c88ddc can also be applied manually to the impacted document SkinsCode.XWikiSkinsSheet and users unable to upgrade are advised to manually patch their installations.
- Record
CVE-2023-37462- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-74, CWE-95
- Updated
- 2026-11-02
EUVDEUVD-2023-2070
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Improper escaping in the document SkinsCode.XWikiSkinsSheet leads to an injection vector from view right on that document to programming rights, or in other words, it is possible to execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The attack works by opening a non-existing page with a name crafted to contain a dangerous payload. It is possible to check if an existing installation is vulnerable. See the linked GHSA for instructions on testing an installation. This issue has been patched in XWiki 14.4.8, 14.10.4 and 15.0-rc-1. Users are advised to upgrade. The fix commit d9c88ddc can also be applied manually to the impacted document SkinsCode.XWikiSkinsSheet and users unable to upgrade are advised to manually patch their installations.
- Record
EUVD-2023-2070- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h4vp-69r8-gvjg
org.xwiki.platform:xwiki-platform-skin-ui Eval Injection vulnerability
Impact
Improper escaping in the document SkinsCode.XWikiSkinsSheet leads to a possible privilege escalation from view right on that document to programming rights, or in other words, it is possible to execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents.
The attack works by opening a non-existing page with a name crafted to contain a dangerous payload.
It is possible to check if an existing installation is vulnerable by opening <xwiki-host>/xwiki/bin/view/%22%5D%5D%20%7B%7Basync%20async%3D%22true%22%20cached%3D%22false%22%20context%3D%22doc.reference%22%7D%7D%7B%7Bgroovy%7D%7Dprintln(%22Hello%20%22%20%2B%20%22from%20groovy!%22)%7B%7B%2Fgroovy%7D%7D%7B%7B%2Fasync%7D%7D?sheet=SkinsCode.XWikiSkinsSheet&xpage=view where <xwiki-host is the URL of the XWiki installation. The expected result are two list items with "Edit this skin" and "Test this skin" without any further text. If the installation is vulnerable, the second list item is "Test this skin Hello from groovy!.WebHome"]]". This shows that the Groovy macro has been executed.
Patches
This has been patched in XWiki 14.4.8, 14.10.4 and 15.0-rc-1.
Workarounds
The fix can also be applied manually to the impacted document SkinsCode.XWikiSkinsSheet.
References
- https://jira.xwiki.org/browse/XWIKI-20457
- https://github.com/xwiki/xwiki-platform/commit/d9c88ddc4c0c78fa534bd33237e95dea66003d29
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
- Record
GHSA-h4vp-69r8-gvjg- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-74, CWE-95
- Updated
- 2026-11-02
NVD
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Improper escaping in the document SkinsCode.XWikiSkinsSheet leads to an injection vector from view right on that document to programming rights, or in other words, it is possible to execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The attack works by opening a non-existing page with a name crafted to contain a dangerous payload. It is possible to check if an existing installation is vulnerable. See the linked GHSA for instructions on testing an installation. This issue has been patched in XWiki 14.4.8, 14.10.4 and 15.0-rc-1. Users are advised to upgrade. The fix commit d9c88ddc can also be applied manually to the impacted document SkinsCode.XWikiSkinsSheet and users unable to upgrade are advised to manually patch their installations.
- Record
CVE-2023-37462- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74, CWE-95
- Updated
- 2026-11-02
OSV
Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') in org.xwiki.platform:xwiki-platform-skin-ui
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Improper escaping in the document SkinsCode.XWikiSkinsSheet leads to an injection vector from view right on that document to programming rights, or in other words, it is possible to execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The attack works by opening a non-existing page with a name crafted to contain a dangerous payload. It is possible to check if an existing installation is vulnerable. See the linked GHSA for instructions on testing an installation. This issue has been patched in XWiki 14.4.8, 14.10.4 and 15.0-rc-1. Users are advised to upgrade. The fix commit d9c88ddc can also be applied manually to the impacted document SkinsCode.XWikiSkinsSheet and users unable to upgrade are advised to manually patch their installations.
- Record
CVE-2023-37462- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-74, CWE-95
- Updated
- 2026-11-02
OSVGHSA-h4vp-69r8-gvjg
org.xwiki.platform:xwiki-platform-skin-ui Eval Injection vulnerability
Impact
Improper escaping in the document SkinsCode.XWikiSkinsSheet leads to a possible privilege escalation from view right on that document to programming rights, or in other words, it is possible to execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents.
The attack works by opening a non-existing page with a name crafted to contain a dangerous payload.
It is possible to check if an existing installation is vulnerable by opening <xwiki-host>/xwiki/bin/view/%22%5D%5D%20%7B%7Basync%20async%3D%22true%22%20cached%3D%22false%22%20context%3D%22doc.reference%22%7D%7D%7B%7Bgroovy%7D%7Dprintln(%22Hello%20%22%20%2B%20%22from%20groovy!%22)%7B%7B%2Fgroovy%7D%7D%7B%7B%2Fasync%7D%7D?sheet=SkinsCode.XWikiSkinsSheet&xpage=view where <xwiki-host is the URL of the XWiki installation. The expected result are two list items with "Edit this skin" and "Test this skin" without any further text. If the installation is vulnerable, the second list item is "Test this skin Hello from groovy!.WebHome"]]". This shows that the Groovy macro has been executed.
Patches
This has been patched in XWiki 14.4.8, 14.10.4 and 15.0-rc-1.
Workarounds
The fix can also be applied manually to the impacted document SkinsCode.XWikiSkinsSheet.
References
- https://jira.xwiki.org/browse/XWIKI-20457
- https://github.com/xwiki/xwiki-platform/commit/d9c88ddc4c0c78fa534bd33237e95dea66003d29
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
- Record
GHSA-h4vp-69r8-gvjg- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-74, CWE-95
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.xwiki.platform:xwiki-platform-skin-uiMaven |
7.0-rc-1 up to 14.4.8 | 14.4.8 |
org.xwiki.platform:xwiki-platform-skin-uiMaven |
14.5 up to 14.10.4 | 14.10.4 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Nuclei | XWiki Platform - Remote Code Execution |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, Nuclei, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-37462 is a critical vulnerability (CVSS 10.0) in Xwiki, published July 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 91.6%, the 99th percentile. Fixed in org.xwiki.platform:xwiki-platform-skin-ui 14.4.8.
References
github.com/xwiki/xwiki-platform/security/advisories/GHSA-h4vp-69r8-gvjg
jira.xwiki.org/browse/XWIKI-20457
nvd.nist.gov/vuln/detail/CVE-2023-37462