CVE-2023-48219Network attack vector

Cross-site scripting via unescaped marker-bearing text nodes

Published Nov 15, 2023 · Updated Aug 29, 2024

Mutation XSS in TinyMCE before 5.10.9 and 6.0.0 through 6.7.2 allows remote attackers to execute script via crafted editor content. During serialization, specific parent elements leave marker-bearing text nodes unescaped, so sanitization accepts malicious HTML that becomes executable after the internal marker is removed and the content is parsed again. Execution requires crafted content to reach the editor and a user-triggered undo/redo, raw-content extraction, reset, or Autosave path; it affects the current user's browser context.

CVSS severity6.1
Medium
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Mutation XSS in TinyMCE before 5.10.9 and 6.0.0 through 6.7.2 allows remote attackers to execute script via crafted editor content. During serialization, specific parent elements leave marker-bearing text nodes unescaped, so sanitization accepts malicious HTML that becomes executable after the internal marker is removed and the content is parsed again. Execution requires crafted content to reach the editor and a user-triggered undo/redo, raw-content extraction, reset, or Autosave path; it affects the current user's browser context.

The record

CVE
CVE-2023-48219
Published
Nov 15, 2023
Updated
Aug 29, 2024
Vendor
Tiny Technologies
Product
TinyMCE
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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=< 5.10.9
  2. Affected versionversion=>= 6.0.0 < 6.7.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tiny Technologies · TinyMCEversion=< 5.10.9; version=>= 6.0.0 < 6.7.3

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 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.

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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