CVE-2024-38357Network attack vector

Cross-site scripting via double-decoded noscript entities

Published Jun 19, 2024 · Updated Aug 2, 2024

Cross-site scripting in affected TinyMCE 5.x, 6.x, and 7.x releases allows remote attackers to execute script when crafted content loads. The DomParser path treated noscript as a special text container, while DomSerializerFilters decoded its entity-encoded child value again, turning encoded closing and style tags into active markup. A user must load attacker-controlled content into an embedded editor; the resulting script runs in that editor's browser context and can alter or read accessible page data.

CVSS severity6.1
Medium
EPSS probability0.53%
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 affected TinyMCE 5.x, 6.x, and 7.x releases allows remote attackers to execute script when crafted content loads. The DomParser path treated noscript as a special text container, while DomSerializerFilters decoded its entity-encoded child value again, turning encoded closing and style tags into active markup. A user must load attacker-controlled content into an embedded editor; the resulting script runs in that editor's browser context and can alter or read accessible page data.

The record

CVE
CVE-2024-38357
Published
Jun 19, 2024
Updated
Aug 2, 2024
Vendor
Tiny Technologies
Product
TinyMCE
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=< 5.11.0
  2. Affected versionversion=>= 6.0.0, <6.8.4
  3. Affected versionversion=>= 7.0.0, < 7.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tiny Technologies · TinyMCEversion=< 5.11.0; version=>= 6.0.0, <6.8.4; version=>= 7.0.0, < 7.2.0

Published CVSS scores

5.3GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L
6.1GitHub CNACVSS: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')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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