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CVE-2021-26271

Published: 26 January 2021

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).

Notes

AuthorNote
litios
No specific patch was found

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
ckeditor
Launchpad, Ubuntu, Debian
focal Needs triage

impish
Released (4.16.0+dfsg-2)
kinetic Not vulnerable
(4.16.2+dfsg-1)
lunar Not vulnerable
(4.16.2+dfsg-1)
bionic Needs triage

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
trusty Does not exist

upstream
Released (4.16)
xenial Needs triage

jammy Not vulnerable
(4.16.2+dfsg-1)
mantic Not vulnerable
(4.16.2+dfsg-1)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H