CVE-2018-17960 Ckeditor XSS Vulnerability

What is CVE-2018-17960?

CVE-2018-17960 is a medium-severity cross-site scripting vulnerability in n/a, published on 14 Nov 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

CKEditor 4.x before 4.11.0 allows user-assisted XSS involving a source-mode paste.

Weakness: CWE-79

Which versions are affected by CVE-2018-17960?

10 open source packages ship an affected version, including typo3/cms, typo3/cms-core and ckeditor. It affects 1 product.

Products include Ckeditor Ckeditor.

How do I fix CVE-2018-17960?

Upgrade typo3/cms to a fixed version for your release line: 8.7.21 or 9.5.2.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2018-17960 being exploited?

There is no known exploitation of CVE-2018-17960 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2023-31541 File upload in n/a Critical 9.8
• CVE-2021-41164 Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML High 8.2
• CVE-2021-41165 HTML comments vulnerability allowing to execute JavaScript code High 8.2
• CVE-2021-32808 Cross-site scripting in ckeditor via abuse of undo functionality High 7.6
• CVE-2011-4972 Missing authorization in CKEditor Drupal module High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as CLSA-2026-1782262731, DEBIAN-CVE-2018-17960, GHSA-g68x-vvqq-pvw3, UBUNTU-CVE-2018-17960.