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CVE-2021-26272

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 URL-like text into the editor, and then press Enter or Space (in the Autolink 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
bionic Needs triage

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)
trusty Does not exist

upstream
Released (4.16)
groovy Ignored
(end of life)
hirsute Ignored
(end of life)
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