CVE-2024-21910 json
Cross-site scripting vulnerability in TinyMCE plugins
published 2021-11-02 5 y ago modified 2026-11-08 25 h ago also EUVD-2021-2389 , GHSA-r8hm-w5f7-wj39 , PYSEC-2026-632
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
TinyMCE versions before 5.10.0 are affected by a cross-site scripting vulnerability. A remote and unauthenticated attacker could introduce crafted image or link URLs that would result in the execution of arbitrary JavaScript in an editing user's browser.
Patch / fix
- npm tinymce 5.10.0
- packagist tinymce/tinymce 5.10.0
- nuget TinyMCE 5.10.0
- pypi django-tinymce 3.4.0
- tiny tinymce 5.10.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/advisories/GHSA-r8hm-w5f7-wj39 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| OSV | 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 | <5.10.0 |
5.10.0 |
| packagist | tinymce/tinymce | <5.10.0 |
5.10.0 |
| nuget | TinyMCE | <5.10.0 |
5.10.0 |
| pypi | django-tinymce | <3.4.0 |
3.4.0 |
Classification
References
-
github.com
/advisories/GHSA-r8hm-w5f7-wj39
vendor-advisory, third-party-advisory, exploit, advisory
-
github.com
/tinymce/tinymce/security/advisories/GHSA-r8hm-w5f7-wj39
vendor-advisory, web, third-party-advisory
-
github.com
/jazzband/django-tinymce/issues/366
issue-tracking, web, third-party-advisory
-
github.com
/jazzband/django-tinymce/releases/tag/3.4.0
related, release-notes, web
-
pypi.org
/project/django-tinymce/3.4.0/
related, release-notes
-
vulncheck.com
/advisories/vc-advisory-GHSA-r8hm-w5f7-wj39
third-party-advisory
-
github.com
/tinymce/tinymce
package
-
pypi.org
/project/django-tinymce/3.4.0
web
-
pypi.org
/project/django-tinymce
package
-
nvd.nist.gov
/vuln/detail/CVE-2024-21910
advisory
Sources
- CVE List CVE-2024-21910
- GitHub Advisory GHSA-r8hm-w5f7-wj39
- NVD CVE-2024-21910
- OSV PYSEC-2026-632
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.