CVE-2022-23499Network attack vector

Cross-site scripting via unsanitized raw-text DOM nodes

Published Dec 13, 2022 · Updated Apr 23, 2025

Cross-site scripting in TYPO3 Association's TYPO3 HTML Sanitizer before 1.5.0 or 2.1.1 allows attackers to inject script through crafted markup. The sanitizer leaves raw-text elements returned by masterminds/html5 as DOMText nodes unprocessed when custom behaviors allow those tags. Exploitation requires a custom behavior for script, style, noframes, noembed, or iframe and a user to render the sanitized output.

CVSS severity6.1
Medium
EPSS probability0.44%
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 TYPO3 Association's TYPO3 HTML Sanitizer before 1.5.0 or 2.1.1 allows attackers to inject script through crafted markup. The sanitizer leaves raw-text elements returned by masterminds/html5 as DOMText nodes unprocessed when custom behaviors allow those tags. Exploitation requires a custom behavior for script, style, noframes, noembed, or iframe and a user to render the sanitized output.

The record

CVE
CVE-2022-23499
Published
Dec 13, 2022
Updated
Apr 23, 2025
Vendor
TYPO3 Association
Product
TYPO3 HTML Sanitizer
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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=>= 1.0.0, < 1.5.0
  2. Affected versionversion=>= 2.0.0, < 2.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TYPO3 Association · TYPO3 HTML Sanitizerversion=>= 1.0.0, < 1.5.0; version=>= 2.0.0, < 2.1.1

Published CVSS scores

5.7GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C
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 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')
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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