TinyMCE Cross-Site Scripting (XSS) vulnerability in handling iframes
Published Mar 26, 2024
6.1
MEDIUMCVSS 3.1
EPSS 0.71%
Description
TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s content insertion code. This allowed `iframe` elements containing malicious code to execute when inserted into the editor. These `iframe` elements are restricted in their permissions by same-origin browser protections, but could still trigger operations such as downloading of malicious assets. This vulnerability is fixed in 6.8.1.
Affected products
-
- Version < 6.8.1StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
tinymce
npm
Introduced 0 Fixed 6.8.1TinyMCE
NuGet
Introduced 0 Fixed 6.8.1tinymce/tinymce
Packagist
Introduced 0 Fixed 6.8.1
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | tinymce | 0 | 6.8.1 |
| NuGet | TinyMCE | 0 | 6.8.1 |
| Packagist | tinymce/tinymce | 0 | 6.8.1 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
1 other source (GHSA) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Aug 6, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2024–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (7 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.71% (0.00713) | 51.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.72% (0.00722) | 48.98th | v5 (v2026.06.15) |
| Sep 5, 2025 | 1.57% (0.01571) | 80.85th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.30% (0.00303) | 51.39th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00045) | 17.70th | v3 (v2023.03.01) |
| May 31, 2024 | 0.04% (0.00045) | 15.14th | v3 (v2023.03.01) |
| Mar 27, 2024 | 0.04% (0.00045) | 13.12th | v3 (v2023.03.01) |
References (6)
- https://github.com/advisories/GHSA-438c-3975-5x3f Advisory
- https://github.com/tinymce/tinymce/commit/bcdea2ad14e3c2cea40743fb48c63bba067ae6d1 x_refsource_MISCPatch
- https://github.com/tinymce/tinymce/security/advisories/GHSA-438c-3975-5x3f x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2024-29203
- https://www.tiny.cloud/docs/tinymce/6/6.8.1-release-notes/#new-convert_unsafe_embeds-option-that-controls-whether-object-and-embed-elements-will-be-converted-to-more-restrictive-alternatives-namely-img-for-image-mime-types-video-for-video-mime-types-audio-audio-mime-types-or-iframe-for-other-or-unspecified-mime-types x_refsource_MISCRelease Notes
- https://www.tiny.cloud/docs/tinymce/7/7.0-release-notes/#sandbox_iframes-editor-option-is-now-defaulted-to-true x_refsource_MISCRelease Notes
Change history (0)
No recorded changes yet.