CVE-2021-26272
Inclusion of Functionality from Untrusted Control Sphere in CKEditor 4
6.5
MEDIUM
CVSS 3.1
EPSS 0.50%
Description
It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted URL-like text into the editor, and then press Enter or Space (in the Autolink plugin).
How to fix CVE-2021-26272
To remediate CVE-2021-26272, upgrade the affected package to a fixed version below.
- Debian/ckeditor—upgrade to 4.16.0+dfsg-1 or later
- —upgrade to 4.16.0 or later
Is CVE-2021-26272 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.16.0+dfsg-1
- from 0, < 4.16.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |