CVE-2026-66474Network attack vector

Unauthorized plugin activation via missing nonce verification

Published Jul 27, 2026 · Updated Jul 27, 2026

Cross-site request forgery in HasThemes Insert Headers and Footers Code – HT Script 1.1.8 and earlier allows remote attackers to activate plugins. The plugin activation AJAX handler processes state-changing requests without nonce verification, accepting forged requests from another site. Exploitation requires an authenticated privileged user to visit a crafted page or link, allowing activation within that user's WordPress permissions.

CVSS severity4.3
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in HasThemes Insert Headers and Footers Code – HT Script 1.1.8 and earlier allows remote attackers to activate plugins. The plugin activation AJAX handler processes state-changing requests without nonce verification, accepting forged requests from another site. Exploitation requires an authenticated privileged user to visit a crafted page or link, allowing activation within that user's WordPress permissions.

The record

CVE
CVE-2026-66474
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
HasThemes
Product
Insert Headers and Footers Code – HT Script
Classifications
CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=1.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HasThemes · Insert Headers and Footers Code – HT Scriptversion=n/a <=1.1.8

Published CVSS scores

4.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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