TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes (tinymce tinymce)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.28 % · percentile 21 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
Description
TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability via unsanitized data-mce-* attributes (data-mce-href, data-mce-src, data-mce-style). Allows attackers to inject malicious values that override safe attributes during serialization, bypassing validation. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.
Weaknesses (CWE)
- CWE-79 — Improper Neutralization of Input During Web Page Generation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N | GitHub_M |
| CVSS 3.1 | HIGH 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | MEDIUM 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-q742-qvgc-gc2f — TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes
European references
- ENISA EUVD · EUVD-2026-32921
- GCVE · GCVE-0-2026-47759
CERT-FR advisories
- CERTFR-2026-AVI-1318 — Multiples vulnérabilités dans Moodle · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:tiny:tinymce:*:*:*:*:*:*:*:*< 5.11.1cpe:2.3:a:tiny:tinymce:*:*:*:*:*:*:*:*≥ 6.0.0 < 7.9.3cpe:2.3:a:tiny:tinymce:*:*:*:*:*:*:*:*≥ 8.0.0 < 8.5.1
Affected products
| Product | Versions |
|---|---|
| tinymce · tinymce | affected < 5.11.1 ; affected >= 6.0.0, <= 6.8.6 ; affected >= 7.0.0, < 7.9.3 ; affected >= 8.0.0, < 8.5.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |