CVE-2023-1259: The Hotjar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the hotjar_site_id in version

Q: How do I fix CVE-2023-1259?

hotjar: upgrade to newer than 1.0.15. Exact commands for each OS are on this page.

Q: Is CVE-2023-1259 being exploited?

CVE-2023-1259 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-1259 affect?

CVE-2023-1259 affects hotjar. Severity is medium (CVSS 4.4). 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 authenticate

Q: How urgent is CVE-2023-1259?

Priority 33/100. Public exploit reference

Routine

MEDIUM 4.4UPGRADE

CVE-2023-1259 is a medium-severity flaw (CVSS 4.4) affecting hotjar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.4 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-10-14
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: hotjar

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-14 12:15 UTCPublished CVE record published
2026-06-17 05:27 UTCUpdated Record last modified

hotjar hotjar UPGRADE

Affected: <= 1.0.15

Fixed in: newer than 1.0.15

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hotjar || rpm -q hotjar || hotjar --version

2. UPGRADE to newer than 1.0.15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hotjar

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hotjar

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-1259?

hotjar: upgrade to newer than 1.0.15. Exact commands for each OS are on this page.

Is CVE-2023-1259 being exploited?

CVE-2023-1259 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-1259 affect?

CVE-2023-1259 affects hotjar. Severity is medium (CVSS 4.4). 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 authenticate

How urgent is CVE-2023-1259?

Priority 33/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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