CVE-2023-1259

MEDIUM 4.4

Hotjar <= 1.0.15 - Authenticated (Administrator+) Stored Cross-Site Scripting

CVSS Score

4.4

EPSS Score

0.0%

EPSS Percentile

0th

The Hotjar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the hotjar_site_id in versions up to, and including, 1.0.15 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

CWE	CWE-79
Vendor	hotjar
Product	hotjar
Published	Oct 14, 2023
Last Updated	Apr 8, 2026

Stay Ahead of the Next One

Get instant alerts for hotjar hotjar

Be the first to know when new medium vulnerabilities affecting hotjar hotjar are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

hotjar / Hotjar

0 ≤ 1.0.15

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/9c640bcb-b6bf-4865-b713-32ca846e4ed9?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/hotjar/tags/1.0.14/includes/class-hotjar.php#L40 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2983524%40hotjar&new=2983524%40hotjar&sfp_email=&sfph_mail=

Credits

Marco Wotschka