CVE-2022-48110Network attack vector

Cross-site scripting via unsanitized HTML previews

Published Feb 13, 2023 · Updated Mar 24, 2025

Cross-site scripting in CKSource CKEditor 5 35.4.0 allows remote attackers to execute JavaScript through an HTML Embed content preview. When integrators enable config.htmlEmbed.showPreviews without a sanitizer, the widget renders user-supplied HTML and executes inline event handlers or javascript URLs in the site's context. The preview option is disabled by default, user interaction is required, and CKSource disputes that integrator-controlled unsafe configuration is a product vulnerability.

CVSS severity6.1
Medium
EPSS probability2.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in CKSource CKEditor 5 35.4.0 allows remote attackers to execute JavaScript through an HTML Embed content preview. When integrators enable config.htmlEmbed.showPreviews without a sanitizer, the widget renders user-supplied HTML and executes inline event handlers or javascript URLs in the site's context. The preview option is disabled by default, user interaction is required, and CKSource disputes that integrator-controlled unsafe configuration is a product vulnerability.

The record

CVE
CVE-2022-48110
Published
Feb 13, 2023
Updated
Mar 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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