CVE-2015-8834

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-05-22 · updated 2026-06-17
Weakness: CWE-79

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.

Affected products

WordPress: through 4.2.1

References

http://www.debian.org/security/2016/dsa-3639
https://codex.wordpress.org/Version_4.2.2
https://wordpress.org/news/2015/05/wordpress-4-2-2/
http://www.debian.org/security/2016/dsa-3639
https://codex.wordpress.org/Version_4.2.2
https://wordpress.org/news/2015/05/wordpress-4-2-2/

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