How severe is GHSA-h4vp-69r8-gvjg?

GHSA-h4vp-69r8-gvjg has a CVSS score of 9.9/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by GHSA-h4vp-69r8-gvjg?

GHSA-h4vp-69r8-gvjg affects the following packages: org.xwiki.platform:xwiki-platform-skin-ui (Maven), org.xwiki.platform:xwiki-platform-skin-ui (Maven). Ecosystems affected: Maven.

How do I fix GHSA-h4vp-69r8-gvjg?

Update org.xwiki.platform:xwiki-platform-skin-ui to version 14.4.8 or later. Run your dependency manager's update command and verify no transitive dependencies pin the vulnerable version. Use O3 Security's SCA scanner to confirm the fix is applied across your entire dependency tree.

Is GHSA-h4vp-69r8-gvjg actively exploited in the wild?

Yes. There are 2 known exploit references for GHSA-h4vp-69r8-gvjg, including 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for GHSA-h4vp-69r8-gvjg?

GHSA-h4vp-69r8-gvjg has an EPSS (Exploit Prediction Scoring System) score of 90.3%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is GHSA-h4vp-69r8-gvjg?

GHSA-h4vp-69r8-gvjg is classified as CWE-74 (CWE-74), CWE-95 (CWE-95). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Is there exploit tooling available for GHSA-h4vp-69r8-gvjg?

A Nuclei detection template exists for GHSA-h4vp-69r8-gvjg, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was GHSA-h4vp-69r8-gvjg published, and has it been updated?

GHSA-h4vp-69r8-gvjg was published on July 14, 2023 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕ Maven

GHSA-h4vp-69r8-gvjg

CRITICAL

org.xwiki.platform:xwiki-platform-skin-ui Eval Injection vulnerability

Also known asCVE-2023-37462

Published

Jul 14, 2023

Updated

Nov 8, 2023

Affected

2 pkgs

Patched

2 / 2

Exploits

2 known

EPSS Exploitation Probability

via FIRST.org ↗

90.3%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

2 pkgs affected

☕org.xwiki.platform:xwiki-platform-skin-ui☕org.xwiki.platform:xwiki-platform-skin-ui

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

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

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 Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.xwiki.platform:xwiki-platform-skin-ui`	≥ 7.0-rc-1&&< 14.4.8	14.4.8
☕Maven	`org.xwiki.platform:xwiki-platform-skin-ui`	≥ 14.5&&< 14.10.4	14.10.4

Exploits & PoCs

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.comNVDJul 2023

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

jira.xwiki.orgNVDJul 2023

Frequently Asked Questions

### 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%7

O3 Security · Impact-Aware SCA

Is GHSA-h4vp-69r8-gvjg in your stack?

O3 detects GHSA-h4vp-69r8-gvjg across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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