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Security Advisories: GSA_kwCzR0hTQS1yOGhtLXc1Zjctd2ozOc0Wzg

Cross-site scripting vulnerability in TinyMCE plugins

Impact

A cross-site scripting (XSS) vulnerability was discovered in the URL processing logic of the image and link plugins. The vulnerability allowed arbitrary JavaScript execution when updating an image or link using a specially crafted URL. This issue only impacted users while editing and the dangerous URLs were stripped in any content extracted from the editor. This impacts all users who are using TinyMCE 5.9.2 or lower.

Patches

This vulnerability has been patched in TinyMCE 5.10.0 by improved sanitization logic when updating URLs in the relevant plugins.

Workarounds

To work around this vulnerability, either:

Acknowledgements

Tiny Technologies would like to thank Yakir6 for discovering this vulnerability.

References

https://www.tiny.cloud/docs/release-notes/release-notes510/#securityfixes

For more information

If you have any questions or comments about this advisory:

Permalink: https://github.com/advisories/GHSA-r8hm-w5f7-wj39
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1yOGhtLXc1Zjctd2ozOc0Wzg
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 3 years ago
Updated: about 1 year ago


CVSS Score: 6.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Percentage: 0.01061
EPSS Percentile: 0.84024

Identifiers: GHSA-r8hm-w5f7-wj39, CVE-2024-21910
References: Repository: https://github.com/tinymce/tinymce
Blast Radius: 64.7

Affected Packages

pypi:django-tinymce
Dependent packages: 9
Dependent repositories: 3,322
Downloads: 258,034 last month
Affected Version Ranges: < 3.4.0
Fixed in: 3.4.0
All affected versions: 1.4.1, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.1.0, 2.2.0, 2.3.0, 2.4.0, 2.5.0, 2.6.0, 2.6.1, 2.7.0, 2.7.1, 2.8.0, 2.9.0, 3.0.1, 3.0.2, 3.1.0, 3.2.0, 3.3.0
All unaffected versions: 3.4.0, 3.5.0, 3.6.0, 3.6.1, 3.7.0, 3.7.1, 4.0.0, 4.1.0
nuget:TinyMCE
Dependent packages: 5
Dependent repositories: 0
Downloads: 4,592,511 total
Affected Version Ranges: < 5.10.0
Fixed in: 5.10.0
All affected versions: 3.4.4, 3.4.5, 3.4.7, 3.5.0, 3.5.1, 3.5.2, 3.5.3, 3.5.4, 3.5.5, 3.5.6, 3.5.7, 3.5.8, 4.0.0, 4.0.1, 4.0.2, 4.0.4, 4.0.5, 4.0.6, 4.0.8, 4.0.9, 4.0.10, 4.0.11, 4.0.13, 4.0.14, 4.0.15, 4.0.16, 4.0.17, 4.0.18, 4.0.19, 4.0.20, 4.0.21, 4.0.22, 4.0.23, 4.0.24, 4.0.25, 4.0.26, 4.0.27, 4.0.28, 4.1.0, 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.1.8, 4.1.9, 4.1.10, 4.2.0, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.7, 4.2.8, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.6, 4.3.7, 4.3.8, 4.3.9, 4.3.10, 4.3.11, 4.3.12, 4.3.13, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.5.0, 4.5.1, 4.5.2, 4.5.3, 4.5.4, 4.5.5, 4.5.6, 4.5.7, 4.5.8, 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4, 4.6.5, 4.6.6, 4.6.7, 4.7.0, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.7.8, 4.7.9, 4.7.10, 4.7.11, 4.7.12, 4.7.13, 4.8.0, 4.8.1, 4.8.2, 4.8.3, 4.8.4, 4.8.5, 4.9.0, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 4.9.5, 4.9.6, 4.9.7, 4.9.8, 4.9.9, 4.9.10, 4.9.11, 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.0.10, 5.0.11, 5.0.12, 5.0.13, 5.0.14, 5.0.15, 5.0.16, 5.1.0, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.2.0, 5.2.1, 5.2.2, 5.3.0, 5.3.1, 5.3.2, 5.4.0, 5.4.1, 5.4.2, 5.5.0, 5.5.1, 5.6.0, 5.6.1, 5.6.2, 5.7.0, 5.7.1, 5.8.0, 5.8.1, 5.8.2, 5.9.0, 5.9.1, 5.9.2
All unaffected versions: 5.10.0, 5.10.1, 5.10.2, 5.10.3, 5.10.4, 5.10.5, 5.10.6, 5.10.7, 5.10.8, 5.10.9, 6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.1.0, 6.1.1, 6.1.2, 6.2.0, 6.3.0, 6.3.1, 6.3.2, 6.4.0, 6.4.1, 6.4.2, 6.5.0, 6.5.1, 6.6.2, 6.7.0, 6.7.1, 6.7.2, 6.7.3, 6.8.0, 6.8.1, 6.8.2, 6.8.3, 6.8.4, 6.8.5, 7.0.0, 7.0.1, 7.1.0, 7.1.1, 7.1.2, 7.2.0, 7.2.1, 7.3.0, 7.4.0, 7.4.1, 7.5.0, 7.5.1, 7.6.0
packagist:tinymce/tinymce
Dependent packages: 122
Dependent repositories: 672
Downloads: 5,880,079 total
Affected Version Ranges: < 5.10.0
Fixed in: 5.10.0
All affected versions: 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.0.8, 4.0.9, 4.0.10, 4.0.11, 4.0.12, 4.0.13, 4.0.14, 4.0.15, 4.0.16, 4.0.17, 4.0.18, 4.0.19, 4.0.20, 4.0.21, 4.0.22, 4.0.23, 4.0.24, 4.0.25, 4.0.26, 4.0.27, 4.0.28, 4.1.0, 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.1.8, 4.1.9, 4.1.10, 4.2.0, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.7, 4.2.8, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.6, 4.3.7, 4.3.8, 4.3.9, 4.3.10, 4.3.11, 4.3.12, 4.3.13, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.5.0, 4.5.1, 4.5.2, 4.5.3, 4.5.4, 4.5.5, 4.5.6, 4.5.7, 4.5.8, 4.5.9, 4.5.12, 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4, 4.6.5, 4.6.6, 4.6.7, 4.7.0, 4.7.1, 4.7.2, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.7.8, 4.7.9, 4.7.10, 4.7.11, 4.7.12, 4.7.13, 4.8.0, 4.8.1, 4.8.2, 4.8.3, 4.8.4, 4.8.5, 4.9.0, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 4.9.5, 4.9.6, 4.9.7, 4.9.8, 4.9.9, 4.9.10, 4.9.11, 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.0.10, 5.0.11, 5.0.12, 5.0.13, 5.0.14, 5.0.15, 5.0.16, 5.1.0, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.2.0, 5.2.1, 5.2.2, 5.3.0, 5.3.1, 5.3.2, 5.4.0, 5.4.1, 5.4.2, 5.5.0, 5.5.1, 5.6.0, 5.6.1, 5.6.2, 5.7.0, 5.7.1, 5.8.0, 5.8.1, 5.8.2, 5.9.0, 5.9.1, 5.9.2
All unaffected versions: 5.10.0, 5.10.1, 5.10.2, 5.10.3, 5.10.4, 5.10.5, 5.10.6, 5.10.7, 5.10.8, 5.10.9, 6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.1.0, 6.1.1, 6.1.2, 6.2.0, 6.3.0, 6.3.1, 6.3.2, 6.4.0, 6.4.1, 6.4.2, 6.5.0, 6.5.1, 6.6.0, 6.6.1, 6.6.2, 6.7.0, 6.7.1, 6.7.2, 6.7.3, 6.8.0, 6.8.1, 6.8.2, 6.8.3, 6.8.4, 6.8.5, 7.0.0, 7.0.1, 7.1.0, 7.1.1, 7.1.2, 7.2.0, 7.2.1, 7.3.0, 7.4.0, 7.4.1, 7.5.0, 7.5.1, 7.6.0
npm:tinymce
Dependent packages: 1,197
Dependent repositories: 12,552
Downloads: 1,955,364 last month
Affected Version Ranges: < 5.10.0
Fixed in: 5.10.0
All affected versions: 4.0.25, 4.0.26, 4.0.27, 4.0.28, 4.1.0, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.1.8, 4.1.9, 4.1.10, 4.2.0, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.7, 4.2.8, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.5, 4.3.6, 4.3.7, 4.3.8, 4.3.9, 4.3.10, 4.3.11, 4.3.12, 4.3.13, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.5.0, 4.5.1, 4.5.2, 4.5.3, 4.5.4, 4.5.5, 4.5.6, 4.5.7, 4.5.8, 4.5.9, 4.5.10, 4.5.12, 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4, 4.6.5, 4.6.6, 4.6.7, 4.7.0, 4.7.1, 4.7.2, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.7.8, 4.7.9, 4.7.10, 4.7.11, 4.7.12, 4.7.13, 4.8.0, 4.8.1, 4.8.2, 4.8.3, 4.8.4, 4.8.5, 4.9.0, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 4.9.5, 4.9.6, 4.9.7, 4.9.8, 4.9.9, 4.9.10, 4.9.11, 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.0.10, 5.0.11, 5.0.12, 5.0.13, 5.0.14, 5.0.15, 5.0.16, 5.1.0, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.2.0, 5.2.1, 5.2.2, 5.3.0, 5.3.1, 5.3.2, 5.4.0, 5.4.1, 5.4.2, 5.5.0, 5.5.1, 5.6.0, 5.6.1, 5.6.2, 5.7.0, 5.7.1, 5.8.0, 5.8.1, 5.8.2, 5.9.0, 5.9.1, 5.9.2
All unaffected versions: 5.10.0, 5.10.1, 5.10.2, 5.10.3, 5.10.4, 5.10.5, 5.10.6, 5.10.7, 5.10.8, 5.10.9, 6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.1.0, 6.1.1, 6.1.2, 6.2.0, 6.3.0, 6.3.1, 6.3.2, 6.4.0, 6.4.1, 6.4.2, 6.5.0, 6.5.1, 6.6.0, 6.6.1, 6.6.2, 6.7.0, 6.7.1, 6.7.2, 6.7.3, 6.8.0, 6.8.1, 6.8.2, 6.8.3, 6.8.4, 6.8.5, 7.0.0, 7.0.1, 7.1.0, 7.1.1, 7.1.2, 7.2.0, 7.2.1, 7.3.0, 7.4.0, 7.4.1, 7.5.0, 7.5.1, 7.6.0