CVE-2022-23458Public exploitNetwork attack vector

Cross-site scripting via unsanitized clipboard HTML

Published Sep 22, 2022 · Updated Apr 22, 2025

Cross-site scripting in NHN Cloud TOAST UI Grid before 4.21.3 allows attackers to execute JavaScript from crafted HTML pasted into editable cells. ClipboardComp reads the text/html clipboard payload without sanitization, while DefaultRenderer assigns the resulting formatted value to innerHTML without neutralizing executable markup. Exploitation requires a user to paste attacker-controlled rich content into an editable cell; the script then runs in the application's browser origin, allowing page data to be read or changed.

CVSS severity6.1
Medium
EPSS probability0.56%
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 NHN Cloud TOAST UI Grid before 4.21.3 allows attackers to execute JavaScript from crafted HTML pasted into editable cells. ClipboardComp reads the text/html clipboard payload without sanitization, while DefaultRenderer assigns the resulting formatted value to innerHTML without neutralizing executable markup. Exploitation requires a user to paste attacker-controlled rich content into an editable cell; the script then runs in the application's browser origin, allowing page data to be read or changed.

The record

CVE
CVE-2022-23458
Published
Sep 22, 2022
Updated
Apr 22, 2025
Vendor
NHN Cloud
Product
TOAST UI Grid
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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?

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

  1. Affected versionversion=4.21.3 <4.21.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NHN Cloud · TOAST UI Gridversion=4.21.3 <4.21.3

Published CVSS scores

6.1GitHubCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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