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CRITICAL severity

XWiki Platform vulnerable to code injection in display method used in user profilesGHSA-x764-ff8r-9hpx

CRITICALFix: xwiki/xwiki-platform@0d54718

GHSA-x764-ff8r-9hpx is a critical-severity (CVSS 9.9) CWE-74 vulnerability in org.xwiki.platform:xwiki-platform-oldcore. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for org.xwiki.platform:xwiki-platform-oldcore — see the affected versions and patch details below.

Also known asCVE-2023-29523
Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
2 known
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for GHSA-x764-ff8r-9hpx.

EPSS Exploitation Probability

via FIRST.org ↗
2.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs81th percentile — riskier than 81% of all scored CVEsHighest risk
0.00%4.41%8.82%13.2%10.6%2.0%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

3 pkgs affected
☕org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-oldcore

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Any user who can edit their own user profile 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. The following syntax, to be put, e.g., in the about section of the user profile, demonstrates a proof of concept:

{{html wiki="true"}}~{~{~/~h~t~m~l~}~}~ ~{~{~c~a~c~h~e~}~}~{~{~g~r~o~o~v~y~}~}~p~r~i~n~t~l~n~(~1~)~{~{~/~g~r~o~o~v~y~}~}~{~{~/~c~a~c~h~e~}~}~{{/html}}

While it would be expected that the above code is displayed just without the ~, in fact just "1" is displayed, followed by a lot of raw HTML code. The same vulnerability can also be exploited in other contexts where the display method on a document is used to display a field with wiki syntax, for example in applications created using App Within Minutes.

Patches

This has been patched in XWiki 13.10.11, 14.4.8, 14.10.2 and 15.0RC1.

Workarounds

There is no workaround apart from upgrading.

References

For more information

If you have any questions or comments about this advisory:

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.xwiki.platform:xwiki-platform-oldcore≥ 3.3-milestone-1&&< 13.10.1113.10.11org.xwiki.platform:xwiki-platform-oldcore:13.10.11
☕Mavenorg.xwiki.platform:xwiki-platform-oldcore≥ 14.0-rc-1&&< 14.4.814.4.8org.xwiki.platform:xwiki-platform-oldcore:14.4.8
☕Mavenorg.xwiki.platform:xwiki-platform-oldcore≥ 14.5&&< 14.10.214.10.2org.xwiki.platform:xwiki-platform-oldcore:14.10.2

Affected Products

1 product · 3 configurations
Application
xwikixwiki
≥ 14.5 && < 14.10.2
range
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

XWiki Platform is a generic wiki platform offering runtime services for …

github.comNVDMay 2023

Report on jira.xwiki.org

jira.xwiki.orgNVDMay 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.xwiki.platform:xwiki-platform-oldcore, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.xwiki.platform:xwiki-platform-oldcore to 13.10.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x764-ff8r-9hpx is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Impact Any user who can edit their own user profile 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. The following syntax, to be put, e.g., in the about section of the user profile, demonstrates a proof of concept: ``` {{html wiki="true"}}~{~{~/~h~t~m~l~}~}~ ~{~{~c~a~c~h~e~}~}~{~{~g~r~o~o~v~y~}~}~p~r~i~n~t~l~n~(~1~)~{~{~/~g~r~o~o~v~y~}~}~{~{~/~c~a~c~h~e~}~}~{{/html}} ``` While it would be expected that the above code is displayed just without the `~`, in fact just "1
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XWiki Platform vulnerable to code injection in display…