CVE-2020-12648

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-08-14 · updated 2026-06-17
Weakness: CWE-79

Description

A cross-site scripting (XSS) vulnerability in TinyMCE 5.2.1 and earlier allows remote attackers to inject arbitrary web script when configured in classic editing mode.

Affected products

tinymce: before 4.9.11; from 5.0.0 before 5.4.1 — fixed in 4.9.11, 5.4.1

How to fix

Upgrade to a fixed version: tinymce 4.9.11, 5.4.1. Check the vendor advisory for mitigations.

References

https://labs.bishopfox.com/advisories/tinymce-version-5.2.1
https://labs.bishopfox.com/advisories/tinymce-version-5.2.1

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