Description
Cross-site scripting (XSS) vulnerability in WordPress before 4.2.3 allows remote authenticated users to inject arbitrary web script or HTML by leveraging the Author or Contributor role to place a crafted shortcode inside an HTML element, related to wp-includes/kses.php and wp-includes/shortcodes.php.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wordpress | 4.2.3+dfsg-1 | — |
| Debian 13 | wordpress | 4.2.3+dfsg-1 | — |
| Debian 12 | wordpress | 4.2.3+dfsg-1 | — |
| Debian 8 | wordpress | 4.1+dfsg-1+deb8u4 | DSA-3332-1 |
| Debian 7 | wordpress | 3.6.1+dfsg-1~deb7u8 | DSA-3383-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | wordpress | 3.6.1+dfsg-1~deb6u7 | DLA-294-1 |
Advisories 3
- DLA-294-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3332-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3383-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-3328 vendor-advisory
- http://codex.wordpress.org/Version_4.2.3
- DSA-3332 vendor-advisory
- 1033037 vdb-entry
- https://wordpress.org/news/2015/07/wordpress-4-2-3/
- 76011 vdb-entry
- DSA-3383 vendor-advisory
- [oss-security] 20150723 Re: CVE request: WordPress 4.2.2 and earlier cross-site scripting vulnerability mailing-list
- https://core.trac.wordpress.org/changeset/33359
- https://wpvulndb.com/vulnerabilities/8111
- https://klikki.fi/adv/wordpress3.html