CVE-2024-45400: CKEditor Open Link plugin vulnerable to Cross-site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-06 · updated 2026-06-17
Weakness: CWE-79

Description

ckeditor-plugin-openlink is a plugin for the CKEditor JavaScript text editor that extends the context menu with a possibility to open a link in a new tab. A vulnerability in versions of the plugin prior to 1.0.7 allowed a user to execute JavaScript code by abusing the link href attribute. The fix is available starting with version 1.0.7.

Affected products

mlewand ckeditor-plugin-openlink: before 1.0.7 — fixed in 1.0.7

How to fix

Upgrade to a fixed version: mlewand ckeditor-plugin-openlink 1.0.7. Check the vendor advisory for mitigations.

References

https://github.com/mlewand/ckeditor-plugin-openlink/commit/402391fdd4d9cfd079031372f9caebbf54993ffb
https://github.com/mlewand/ckeditor-plugin-openlink/security/advisories/GHSA-qj47-6x6q-m3c9

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