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MEDIUM severity

Users with SCRIPT right can execute arbitrary code in XWikiGHSA-7qw5-pqhc-xm4g

MEDIUM

GHSA-7qw5-pqhc-xm4g is a medium-severity (CVSS 6.6) Code Injection vulnerability in org.xwiki.platform:xwiki-platform-oldcore. A fix is available for org.xwiki.platform:xwiki-platform-oldcore — see the affected versions and patch details below.

Also known asCVE-2020-15171
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Oct 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs71th percentile — riskier than 71% of all scored CVEsHighest risk
0.23%0.77%1.31%1.84%0.7%1.3%Apr 26Aug 26Oct 26

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

How urgent is this, really

GHSA-7qw5-pqhc-xm4g by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

2 pkgs affected
☕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 with SCRIPT right (EDIT right before XWiki 7.4) can gain access to the application server Servlet context which contains tools allowing to instantiate arbitrary Java objects and invoke methods that may lead to arbitrary code execution.

Patches

It has been patched in both version XWiki 12.2.1 and XWiki 11.10.5.

Workarounds

The only workaround is to give SCRIPT right only to trusted users.

References

https://jira.xwiki.org/browse/XWIKI-17141 https://jira.xwiki.org/browse/XWIKI-17266

It's been reported by the GitHub Security Lab under #GHSL-2020-046.

For more information

If you have any questions or comments about this advisory:

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.xwiki.platform:xwiki-platform-oldcoreall versions11.10.5org.xwiki.platform:xwiki-platform-oldcore:11.10.5
☕Mavenorg.xwiki.platform:xwiki-platform-oldcore≥ 12.0.0&&< 12.2.112.2.1org.xwiki.platform:xwiki-platform-oldcore:12.2.1

Affected Products

1 product · 2 configurations
Application
xwikixwiki
≥ 12.0.0 && < 12.2.1
range

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 11.10.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7qw5-pqhc-xm4g is resolved across your whole dependency graph.

  3. Workarounds

    Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

### Impact Any user with SCRIPT right (EDIT right before XWiki 7.4) can gain access to the application server Servlet context which contains tools allowing to instantiate arbitrary Java objects and invoke methods that may lead to arbitrary code execution. ### Patches It has been patched in both version XWiki 12.2.1 and XWiki 11.10.5. ### Workarounds The only workaround is to give SCRIPT right only to trusted users. ### References https://jira.xwiki.org/browse/XWIKI-17141 https://jira.xwiki.org/browse/XWIKI-17266 It's been reported by the GitHub Security Lab under #GHSL-2020-046. ### F
O3 Security · Impact-Aware SCA

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Users with SCRIPT right can execute arbitrary code in XWiki