CVE-2015-8834

Name	CVE-2015-8834
Description	Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.2 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-3440.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-633-1, DSA-3639-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
wordpress (PTS)	buster	5.0.15+dfsg1-0+deb10u1	fixed
	buster (security)	5.0.20+dfsg1-0+deb10u1	fixed
	bullseye (security), bullseye	5.7.8+dfsg1-0+deb11u2	fixed
	bookworm	6.1.1+dfsg1-1	fixed
	trixie	6.3.2+dfsg1-1	fixed
	sid	6.4.1+dfsg1-1	fixed

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

Package	Type	Release	Fixed Version	Origin
wordpress	source	wheezy	3.6.1+dfsg-1~deb7u12	DLA-633-1
wordpress	source	jessie	4.1+dfsg-1+deb8u9	DSA-3639-1
wordpress	source	(unstable)	4.2.2+dfsg-1

Notes

https://wordpress.org/news/2015/05/wordpress-4-2-2/
Follow-up patch from 4.2.1 -> 4.2.2 for wp-includes/wp-db.php seems not applied
This looks like a required patch: https://github.com/WordPress/WordPress/commit/a3a76fe665dfb62508a66542390a93445f1f7a59
Changes in wp-includes/wp-db.php: https://github.com/WordPress/WordPress/commit/db8f915ee6c236ee2f39e76781bf42367e3f1490
https://core.trac.wordpress.org/changeset/32387/
Wheezy: https://core.trac.wordpress.org/changeset/32391
Wheezy: https://core.trac.wordpress.org/changeset/32395
Wheezy: https://core.trac.wordpress.org/changeset/32423
Wheezy: https://core.trac.wordpress.org/changeset/32435