org.xwiki.platform:xwiki-platform-rendering-macro-rss Cross-site Scripting vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.0 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS

• CVE-2023-29202: 1.39% estimated exploitation activity in the next 30 days; percentile 72.41 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact 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 can be reproduced by inserting the following XWiki syntax in any wiki page like the user account: If an alert is displayed when viewing the page, the wiki is vulnerable. Patches The issue has been patched in XWiki 14.6 RC1, the content of the feed is now properly cleaned before being displayed. Workarounds If the RSS macro isn't used in the wiki, the macro can be uninstalled by deleting…

Published by the source

12 Apr 2023, 20:38 UTC

Last modified by the source

25 Apr 2023, 21:47 UTC

Source last checked

26 Oct 2026, 16:11 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-c885-89fw-55qr

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# Patch Next advisory brief: CVE-2023-29202

Advisory: org.xwiki.platform:xwiki-platform-rendering-macro-rss Cross-site Scripting vulnerability
IDs: CVE-2023-29202, GHSA-c885-89fw-55qr
Record: https://patchnext.com/advisories/cve-2023-29202 (revision 1, source checked 26 Oct 2026, 16:11 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: org.xwiki.platform:xwiki-platform-rendering-macro-rss 14.6-rc-1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.xwiki.platform:xwiki-core-rendering-macro-rss: affected >= 1.8, <= 3.0.1
- Maven org.xwiki.platform:xwiki-platform-rendering-macro-rss: affected < 14.6-rc-1; fixed in 14.6-rc-1

## Suggested inspection (read-only)
- Maven org.xwiki.platform:xwiki-core-rendering-macro-rss: check the installed version with your package manager.
- Maven org.xwiki.platform:xwiki-platform-rendering-macro-rss: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.xwiki.platform:xwiki-core-rendering-macro-rss, org.xwiki.platform:xwiki-platform-rendering-macro-rss.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-c885-89fw-55qr (GitHub-reviewed advisory GHSA-c885-89fw-55qr lists affected ranges: Maven org.xwiki.platform:xwiki-core-rendering-macro-rss >=1.8 =0 <14.6-rc-1)

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