CVE-2024-52300Public exploitNetwork attack vector

Stored XSS via unescaped width parameter

Published Nov 13, 2024 · Updated Nov 13, 2024

Stored XSS in XWiki SAS PDF Viewer Macro (Pro) 2.5.5 and earlier allows remote authenticated users to execute script via page edits. The macro inserts the width parameter into an iframe attribute without escaping HTML metacharacters, so crafted input closes the iframe and adds a script element. Page-edit permission is required, and the script runs in a viewer's XWiki origin; an administrator visit exposes the entire installation's data and actions.

CVSS severity9.0
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in XWiki SAS PDF Viewer Macro (Pro) 2.5.5 and earlier allows remote authenticated users to execute script via page edits. The macro inserts the width parameter into an iframe attribute without escaping HTML metacharacters, so crafted input closes the iframe and adds a script element. Page-edit permission is required, and the script runs in a viewer's XWiki origin; an administrator visit exposes the entire installation's data and actions.

The record

CVE
CVE-2024-52300
Published
Nov 13, 2024
Updated
Nov 13, 2024
Vendor
XWiki SAS
Product
PDF Viewer Macro (Pro)
Classifications
CWE-80, CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 13, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.5.6
  2. Affected versionversion=< 2.5.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

XWiki SAS · PDF Viewer Macro (Pro)version=0 <2.5.6; version=< 2.5.6

Published CVSS scores

9.0NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
9.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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