CVE-2023-36477Network attack vector

Stored XSS via unrestricted CKEditor configuration edits

Published Jun 30, 2023 · Updated Dec 4, 2024

Stored XSS in XWiki Platform allows remote authenticated users to execute JavaScript by editing CKEditor configuration pages. The CKEditor space lacked page-level edit and delete restrictions, so ordinary editors could overwrite stored JavaScript configuration or remove technical pages. Exploitation requires edit rights and victim interaction; the script runs persistently in affected visitors’ browsers, while page deletion can interrupt service.

CVSS severity9.0
Critical
EPSS probability0.90%
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 Platform allows remote authenticated users to execute JavaScript by editing CKEditor configuration pages. The CKEditor space lacked page-level edit and delete restrictions, so ordinary editors could overwrite stored JavaScript configuration or remove technical pages. Exploitation requires edit rights and victim interaction; the script runs persistently in affected visitors’ browsers, while page deletion can interrupt service.

The record

CVE
CVE-2023-36477
Published
Jun 30, 2023
Updated
Dec 4, 2024
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-80, CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 4, 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=org.xwiki.contrib:application-ckeditor-ui: >= 1.9, < 1.64.9
  2. Affected versionversion=org.xwiki.platform:xwiki-platform-ckeditor-ui: >= 14.6-rc-1, < 14.10.6
  3. Affected versionversion=org.xwiki.platform:xwiki-platform-ckeditor-ui: >= 15.0, < 15.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CryptPad · XWiki Platformversion=org.xwiki.contrib:application-ckeditor-ui: >= 1.9, < 1.64.9; version=org.xwiki.platform:xwiki-platform-ckeditor-ui: >= 14.6-rc-1, < 14.10.6; version=org.xwiki.platform:xwiki-platform-ckeditor-ui: >= 15.0, < 15.1

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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 exploitUnconfirmed

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')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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