What is CVE-2024-52300?

CVE-2024-52300 is a critical-severity vulnerability in Xwiki Pdf Viewer Macro, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 9.0/10. Published 2024-11-13.

How severe is CVE-2024-52300?

Critical severity. CVSS v3 base score is 9.0 out of 10.

XSS in Xwiki Pdf Viewer Macro

CVE-2024-52300

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.

Published 2024-11-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Xwiki Pdf Viewer Macro
Xwikisas Macro-Pdfviewer — versions < 2.5.6

Weakness classification (CWE)

References

github.com/xwikisas/macro-pdfviewer/security/advisories/GHSA-84wx-6vfp-5m6g (Third Party Advisory)

Frequently asked questions

What is CVE-2024-52300?: CVE-2024-52300 is a critical-severity vulnerability in Xwiki Pdf Viewer Macro, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 9.0/10. Published 2024-11-13.
How severe is CVE-2024-52300?: Critical severity. CVSS v3 base score is 9.0 out of 10.