CVE-2024-29203 json
TinyMCE Cross-Site Scripting (XSS) vulnerability in handling iframes
published 2024-03-26 2 y ago modified 2026-09-10 1 mo ago also EUVD-2024-0810 , GHSA-438c-3975-5x3f
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm tinymce 6.8.1
- nuget TinyMCE 6.8.1
- packagist tinymce/tinymce 6.8.1
- tiny tinymce 6.8.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | tinymce | <6.8.1 |
6.8.1 |
| nuget | TinyMCE | <6.8.1 |
6.8.1 |
| packagist | tinymce/tinymce | <6.8.1 |
6.8.1 |
Affected products
- tinymce tinymce
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/tinymce/tinymce/commit/bcdea2ad14e3c2cea40743fb48c63bba067ae6d1
web, patch
-
github.com
/tinymce/tinymce/security/advisories/GHSA-438c-3975-5x3f
web, vendor-advisory
-
tiny.cloud
/docs/tinymce/6/6.8.1-release-notes/#new-convert_unsafe_embeds-option-that-controls-whether-object-and-embed-e
web, release-notes
-
tiny.cloud
/docs/tinymce/7/7.0-release-notes/#sandbox_iframes-editor-option-is-now-defaulted-to-true
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2024-29203
advisory
-
github.com
/tinymce/tinymce
package
Sources
- CVE List CVE-2024-29203
- GitHub Advisory GHSA-438c-3975-5x3f
- NVD CVE-2024-29203
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.