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CVE-2023-29509

org.xwiki.platform:xwiki-platform-flamingo-theme-ui Eval Injection vulnerability

10.0 CriticalFix available

XWiki Commons are technical libraries common to several other top level XWiki projects. Any user with view rights on commonly accessible documents can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the documentTree macro parameters in This macro is installed by default in FlamingoThemesCode.WebHome. This page is installed by default. The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

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

76.2%Up 76.1 points since Apr 16, 2023
90%50%10%1%

What each source reports

CVE List Score used 10.0

org.xwiki.platform:xwiki-platform-flamingo-theme-ui Eval Injection vulnerability

XWiki Commons are technical libraries common to several other top level XWiki projects. Any user with view rights on commonly accessible documents can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the documentTree macro parameters in This macro is installed by default in FlamingoThemesCode.WebHome. This page is installed by default. The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

Record
CVE-2023-29509
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-95
Updated
2026-11-02
EUVDEUVD-2023-1278 10.0

XWiki Commons are technical libraries common to several other top level XWiki projects. Any user with view rights on commonly accessible documents can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the documentTree macro parameters in This macro is installed by default in FlamingoThemesCode.WebHome. This page is installed by default. The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

Record
EUVD-2023-1278
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-f4v8-58f6-mwj4 9.9

org.xwiki.platform:xwiki-platform-flamingo-theme-ui Eval Injection vulnerability

Impact

Any user with view rights on commonly accessible documents can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the documentTree macro parameters in This macro is installed by default in FlamingoThemesCode.WebHome. This page is installed by default.

Example of reproduction: Open <xwiki_host>/xwiki/bin/view/%22%20%2F%7D%7D%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=FlamingoThemesCode.WebHome&xpage=view where <xwiki_host> is the URL of your XWiki installation.

The [documentTree] macro is a standalone macro and it cannot be used inline. Click on this message for details. Hello from groovy!.WebHome" /}}

is displayed. This shows that the Groovy macro that is passed in the URL has been executed and thus demonstrates a privilege escalation from view to programming rights.

Patches

The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

Workarounds

The issue can be fixed by replacing the code of FlamingoThemesCode.WebHome by the patched version.

References

For more information

If you have any questions or comments about this advisory:

Record
GHSA-f4v8-58f6-mwj4
CVSS 3.1
9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-94, CWE-95
Updated
2026-11-02
NVD 9.9

XWiki Commons are technical libraries common to several other top level XWiki projects. Any user with view rights on commonly accessible documents can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the documentTree macro parameters in This macro is installed by default in FlamingoThemesCode.WebHome. This page is installed by default. The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

Record
CVE-2023-29509
CVSS 3.1
9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-95, CWE-94
Updated
2026-11-02
OSV 9.9

org.xwiki.platform:xwiki-platform-flamingo-theme-ui Eval Injection vulnerability

XWiki Commons are technical libraries common to several other top level XWiki projects. Any user with view rights on commonly accessible documents can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the documentTree macro parameters in This macro is installed by default in FlamingoThemesCode.WebHome. This page is installed by default. The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

Record
CVE-2023-29509
CVSS 3.1
9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-95
Updated
2026-11-11
OSVGHSA-f4v8-58f6-mwj4 9.9

org.xwiki.platform:xwiki-platform-flamingo-theme-ui Eval Injection vulnerability

Impact

Any user with view rights on commonly accessible documents can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the documentTree macro parameters in This macro is installed by default in FlamingoThemesCode.WebHome. This page is installed by default.

Example of reproduction: Open <xwiki_host>/xwiki/bin/view/%22%20%2F%7D%7D%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=FlamingoThemesCode.WebHome&xpage=view where <xwiki_host> is the URL of your XWiki installation.

The [documentTree] macro is a standalone macro and it cannot be used inline. Click on this message for details. Hello from groovy!.WebHome" /}}

is displayed. This shows that the Groovy macro that is passed in the URL has been executed and thus demonstrates a privilege escalation from view to programming rights.

Patches

The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

Workarounds

The issue can be fixed by replacing the code of FlamingoThemesCode.WebHome by the patched version.

References

For more information

If you have any questions or comments about this advisory:

Record
GHSA-f4v8-58f6-mwj4
CVSS 3.1
9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-94, CWE-95
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.xwiki.platform:xwiki-platform-flamingo-theme-ui
Maven
 7.2-rc-1 up to 13.10.11
13.10.11
org.xwiki.platform:xwiki-platform-flamingo-theme-ui
Maven
 14.0-rc-1 up to 14.4.7
14.4.7
org.xwiki.platform:xwiki-platform-flamingo-theme-ui
Maven
 14.5 up to 14.10
14.10

History

History
RecordedChangedSources
factsOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2023-29509 is a critical vulnerability (CVSS 10.0) in Xwiki, published April 12, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 76.2%, the 99th percentile. Fixed in org.xwiki.platform:xwiki-platform-flamingo-theme-ui 13.10.11.

References

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