CVE-2026-47762: Tinymce Protected` Comments Vulnerability

HIGH
Advisory Identifier: GHSA-v98h-vmpc-fpqv
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CVSS 8.7
CWE-79
Published
Advisory Summary

CVE-2026-47762 is a HIGH (CVSS 8.7) protected` comments vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Tinymce libraries in the npm ecosystem. The issue involves protected` comments. Remediation is available by upgrading affected packages to version 7.9.3, 8.5.1.

CVE-2026-47762 at a Glance

CVE Identifier CVE-2026-47762
GHSA Identifier GHSA-v98h-vmpc-fpqv
Severity HIGH
CVSS v3.1 Base Score 8.7
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Tinymce
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-47762

To remediate this vulnerability, upgrade all affected Tinymce dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

tinymce fixed: Latest secure release 
npm install tinymce@Latest secure release
tinymce fixed: 7.9.3 
npm install tinymce@7.9.3
tinymce fixed: 8.5.1 
npm install tinymce@8.5.1
TinyMCE fixed: Latest secure release 
Upgrade TinyMCE to Latest secure release
TinyMCE fixed: 7.9.3 
Upgrade TinyMCE to 7.9.3
TinyMCE fixed: 8.5.1 
Upgrade TinyMCE to 8.5.1
tinymce/tinymce fixed: Latest secure release 
Upgrade tinymce/tinymce to Latest secure release
tinymce/tinymce fixed: 7.9.3 
Upgrade tinymce/tinymce to 7.9.3
tinymce/tinymce fixed: 8.5.1 
Upgrade tinymce/tinymce to 8.5.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls tinymce

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-47762, inspect your project dependencies using npm:

npm ls tinymce

Analyze the terminal output to locate any version of Tinymce in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.9.3), your application is affected.

Note: The npm ls tinymce command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Tinymce, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Stored XSS vulnerability via forged mce:protected comments. Allows attackers to bypass sanitization and inject scripts that execute when content is restored. Impacts users who utilize the protect option. ### Patches Patched by validating decoded mce:protected content against configured protect regex rules before restoring. Users should upgrade to the latest patched version. ### Workarounds No official workaround available. ### Fix To avoid this vulnerability: Upgrade to TinyMCE 8.5.1 or higher. Upgrade to TinyMCE 7.9.3 or higher. Upgrade to TinyMCE 5.11.1 LTS or higher for TinyMCE 5.x (only available as part of commercial [long-term support](https://www.tiny.cloud/long-term-support/) contract). ### Acknowledgements Tiny thanks [Ivan Babenko](https://github.com/he1d3n) for their help identifying this vulnerability.

CVE-2026-47762 Affected Tinymce Versions

9 component(s)
Fixed Versions:
7.9.38.5.1
Product / Package Ecosystem Affected Versions Fixed Version
tinymce
npm/tinymce
npm
≤ 5.10.9
tinymce
npm/tinymce
npm
≥ 6.0.0
< 7.9.3
7.9.3
tinymce
npm/tinymce
npm
≥ 8.0.0
< 8.5.1
8.5.1
TinyMCE
nuget/TinyMCE
NuGet
≤ 5.10.9
TinyMCE
nuget/TinyMCE
NuGet
≥ 6.0.0
< 7.9.3
7.9.3
TinyMCE
nuget/TinyMCE
NuGet
≥ 8.0.0
< 8.5.1
8.5.1
tinymce/tinymce
 Packagist
≤ 5.10.9
tinymce/tinymce
 Packagist
≥ 6.0.0
< 7.9.3
7.9.3
tinymce/tinymce
 Packagist
≥ 8.0.0
< 8.5.1
8.5.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/tinymce/tinymce/security/advisories/GHSA-v98h-vmpc-fpqv
NVD — CVE-2026-47762 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47762
Tinymce Source Repository REPOSITORY
https://github.com/tinymce/tinymce
www.tiny.cloud/docs/tinymce/7/7.9.... WEB
https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview
www.tiny.cloud/docs/tinymce/8/8.5.... WEB
https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview

Frequently Asked Questions

What is CVE-2026-47762?
CVE-2026-47762 is a security vulnerability in Tinymce involving protected` comments under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Tinymce versions are affected?
Affected versions include releases prior to 7.9.3, 8.5.1 across affected packages: tinymce, TinyMCE, tinymce/tinymce.
What version fixes CVE-2026-47762?
Upgrading to 7.9.3, 8.5.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tinymce affected?
Yes, tinymce is affected in releases prior to Latest secure release, 7.9.3, 8.5.1. Upgrade your dependency to Latest secure release, 7.9.3, 8.5.1 or later.
Is TinyMCE affected?
Yes, TinyMCE is affected in releases prior to Latest secure release, 7.9.3, 8.5.1. Upgrade your dependency to Latest secure release, 7.9.3, 8.5.1 or later.
What is the CVSS score of CVE-2026-47762?
CVE-2026-47762 has a CVSS v3.1 base score of 8.7 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
What CWE is associated with CVE-2026-47762?
CVE-2026-47762 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check npm dependencies for CVE-2026-47762?
Run the dependency tree command: 'npm ls tinymce'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-v98h-vmpc-fpqv",
  "modified" : "2026-07-15T21:07:02Z",
  "published" : "2026-06-05T20:29:07Z",
  "aliases" : [ "CVE-2026-47762" ],
  "summary" : "TinyMCE Cross-Site Scripting (XSS) vulnerability through `mce:protected` comments",
  "details" : "### Impact\nStored XSS vulnerability via forged mce:protected comments. Allows attackers to bypass sanitization and inject scripts that execute when content is restored. Impacts users who utilize the protect option.\n\n### Patches\nPatched by validating decoded mce:protected content against configured protect regex rules before restoring. Users should upgrade to the latest patched version.\n\n### Workarounds\nNo official workaround available.\n\n### Fix\nTo avoid this vulnerability:\n\nUpgrade to TinyMCE 8.5.1 or higher.\nUpgrade to TinyMCE 7.9.3 or higher.\nUpgrade to TinyMCE 5.11.1 LTS or higher for TinyMCE 5.x (only available as part of commercial [long-term support](https://www.tiny.cloud/long-term-support/) contract).\n\n### Acknowledgements\nTiny thanks [Ivan Babenko](https://github.com/he1d3n) for their help identifying this vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"
  } ],
  "affected" : [ {
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      "name" : "tinymce"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
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      }, {
        "last_affected" : "5.10.9"
      } ]
    } ]
  }, {
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      "name" : "tinymce"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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      }, {
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      } ]
    } ]
  }, {
    "package" : {
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    "ranges" : [ {
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      } ]
    } ]
  }, {
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    },
    "ranges" : [ {
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    } ]
  }, {
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    },
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  }, {
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    "ranges" : [ {
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      }, {
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      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "tinymce/tinymce"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
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      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "tinymce/tinymce"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "7.9.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "tinymce/tinymce"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.5.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/tinymce/tinymce/security/advisories/GHSA-v98h-vmpc-fpqv"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-47762"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/tinymce/tinymce"
  }, {
    "type" : "WEB",
    "url" : "https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview"
  }, {
    "type" : "WEB",
    "url" : "https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-05T20:29:07Z",
    "nvd_published_at" : "2026-05-28T16:16:28Z"
  }
}