VULNERABILITY INTELLIGENCE
CVE-2021-26271
CVSS score6.5 MEDIUM
EPSS probability1.99%
CISA KEVNot currently listed
Published2021-01-26
Last modified2026-08-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Description
It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted text into the Styles input of specific dialogs (in the Advanced Tab for Dialogs plugin).
Weakness classification
- nvd@nist.gov: CWE-829
Primary references
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Release Notes, Third Party Advisory
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory