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Fencer Intel
medium 6.1

CVE-2024-38356 json

TinyMCE Cross-Site Scripting (XSS) vulnerability using noneditable_regexp option

published 2y ago modified 2mo ago also EUVD-2024-2005 , GHSA-9hcv-j9pv-qmph , PYSEC-2026-1301

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
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 extraction code. When using the `noneditable_regexp` option, specially crafted HTML attributes containing malicious code were able to be executed when content was extracted from the editor. This vulnerability has been patched in TinyMCE 7.2.0, TinyMCE 6.8.4 and TinyMCE 5.11.0 LTS by ensuring that, when using the `noneditable_regexp` option, any content within an attribute is properly verified to match the configured regular expression before being added. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Patch / fix

  • npm tinymce 5.11.0, 6.8.4, 7.2.0
  • nuget TinyMCE 5.11.0, 6.8.4, 7.2.0
  • packagist tinymce/tinymce 5.11.0, 6.8.4, 7.2.0
  • pypi django-tinymce 4.1.0
  • tiny tinymce 5.11.0, 6.8.4, 7.2.0
  • roundcube Ubuntu Pro 22.04 LTS 1.5.0+dfsg.1-2ubuntu0.1~esm6
  • roundcube Ubuntu Pro 24.04 LTS 1.6.6+dfsg-2ubuntu0.1+esm3

ubuntu advisories UBUNTU-CVE-2024-38356

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2024-38356 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2y ago

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 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
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
<5.11.0
>=6.0.0, <6.8.4
>=7.0.0, <7.2.0
5.11.0
6.8.4
7.2.0
nuget TinyMCE
<5.11.0
>=6.0.0, <6.8.4
>=7.0.0, <7.2.0
5.11.0
6.8.4
7.2.0
packagist tinymce/tinymce
<5.11.0
>=6.0.0, <6.8.4
>=7.0.0, <7.2.0
5.11.0
6.8.4
7.2.0
pypi django-tinymce
<4.1.0
4.1.0

Affected products

  • tinymce tinymce

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel 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.