Description
Cross-site scripting (XSS) vulnerability in the theme-name fallback functionality in wp-includes/class-wp-theme.php in WordPress before 4.7.1 allows remote attackers to inject arbitrary web script or HTML via a crafted directory name of a theme, related to wp-admin/includes/class-theme-installer-skin.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 | 4.7.1+dfsg-1 | — |
| Debian 13 | wordpress | 4.7.1+dfsg-1 | — |
| Debian 12 | wordpress | 4.7.1+dfsg-1 | — |
| Debian 8 | wordpress | 4.1+dfsg-1+deb8u12 | DSA-3779-1 |
| Debian 7 | wordpress | 3.6.1+dfsg-1~deb7u13 | DLA-813-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | wordpress | No fix yet | — |
Advisories 2
- DLA-813-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3779-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- 95402 vdb-entry
- DSA-3779 vendor-advisory
- https://wpvulndb.com/vulnerabilities/8718
- https://www.mehmetince.net/low-severity-wordpress/
- https://github.com/WordPress/WordPress/commit/ce7fb2934dd111e6353784852de8aea2a938b359
- https://codex.wordpress.org/Version_4.7.1
- [oss-security] 20170114 Re: CVE Request: Wordpress: 8 security issues in 4.7 mailing-list
- 1037591 vdb-entry
- https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/