CVE-2020-17480

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-08-10 · updated 2026-06-17
Weakness: CWE-79

Description

TinyMCE before 4.9.7 and 5.x before 5.1.4 allows XSS in the core parser, the paste plugin, and the visualchars plugin by using the clipboard or APIs to insert content into the editor.

Affected products

tinymce: before 4.9.7; from 5.0.0 before 5.1.4 — fixed in 4.9.7, 5.1.4

How to fix

Upgrade to a fixed version: tinymce 4.9.7, 5.1.4. Check the vendor advisory for mitigations.

References

https://github.com/tinymce/tinymce/security/advisories/GHSA-27gm-ghr9-4v95
https://www.tiny.cloud/docs/release-notes/release-notes514/#securityfixes
https://github.com/tinymce/tinymce/security/advisories/GHSA-27gm-ghr9-4v95
https://www.tiny.cloud/docs/release-notes/release-notes514/#securityfixes

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