CVE-2021-26272

Name	CVE-2021-26272
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).
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium
Debian Bugs	982587

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ckeditor (PTS)	stretch	4.5.7+dfsg-2	vulnerable
	buster	4.11.1+dfsg-1	vulnerable
	bullseye, sid	4.12.1+dfsg-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ckeditor	source	(unstable)	(unfixed)			982587

[stretch] - ckeditor <postponed> (Fix along next DLA)
https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-416