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TI-2024-14568 Aliases CVE-2024-21908GHSA-5h9g-x5rv-25wg

Cross-site scripting vulnerability in TinyMCE

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

TinyMCE versions before 5.9.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01066 64th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed TinyMCE: 5.9.0tinymce (npm): 5.9.0+2 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—TinyMCEbefore 5.9.05.9.0Patch availableCNA
—tinymce (npm)before 5.9.05.9.0Patch availableGHSA-5h9g-x5rv-25wg
—TinyMCE (NuGet)before 5.9.05.9.0Patch availableGHSA-5h9g-x5rv-25wg
—tinymce/tinymce (Packagist)before 5.9.05.9.0Patch availableGHSA-5h9g-x5rv-25wg
  • TinyMCE Vendor— Affected before 5.9.0 Fixed in 5.9.0 Patch available CNA
  • tinymce (npm) Vendor— Affected before 5.9.0 Fixed in 5.9.0 Patch available GHSA-5h9g-x5rv-25wg
  • TinyMCE (NuGet) Vendor— Affected before 5.9.0 Fixed in 5.9.0 Patch available GHSA-5h9g-x5rv-25wg
  • tinymce/tinymce (Packagist) Vendor— Affected before 5.9.0 Fixed in 5.9.0 Patch available GHSA-5h9g-x5rv-25wg

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:tiny:tinymce:*:*:*:*:*:*:*:*before 5.9.0VulnerableTiny
  • cpe:2.3:a:tiny:tinymce:*:*:*:*:*:*:*:* Versions before 5.9.0 Vulnerable ·Tiny

Remediation

  • Fix · CNA TinyMCE Fixed in 5.9.0
  • Fix · GHSA-5h9g-x5rv-25wg tinymce (npm) Fixed in 5.9.0 Advisory →
  • Fix · GHSA-5h9g-x5rv-25wg TinyMCE (NuGet) Fixed in 5.9.0 Advisory →
  • Fix · GHSA-5h9g-x5rv-25wg tinymce/tinymce (Packagist) Fixed in 5.9.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-21908
  2. 2026-10-03 Alias added: GHSA-5h9g-x5rv-25wg

References

Exploit 2

Other 2

  • TI-2026-35259 TinyMCE Cross-Site Scripting (XSS) vulnerability through `mce:protected` comments CVSS 3.1HIGH 8.7
  • TI-2026-35258 TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection CVSS 3.1HIGH 8.7
  • TI-2026-35256 TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes CVSS 3.1HIGH 8.7
  • TI-2026-35257 TinyMCE Cross-Site Scripting (XSS) vulnerability using sanitization bypass through nested SVGs CVSS 3.1HIGH 8.7
  • TI-2024-14570 Cross-site scripting vulnerability in TinyMCE plugins CVSS 3.1MEDIUM 6.1
  • TI-2020-10058 A cross-site scripting (XSS) vulnerability in TinyMCE 5.2.1 and earlier allows remote… CVSS 3.1MEDIUM 6.1
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences