CVE-2021-39333Network attack vector

Authenticated site deletion via AJAX nonce

Published Nov 1, 2021 · Updated Mar 31, 2025

Improper access control in HashThemes Demo Importer 1.1.1 and earlier allows remote authenticated users to delete site data via AJAX. The hdi_install_demo AJAX action accepts a reset parameter and invokes database_reset without capability checks because its nonce is visible to all logged-in users; the routine truncates nearly all database tables and then clear_uploads removes wp-content/uploads files. Any logged-in account, including a subscriber, can trigger permanent content loss, causing site integrity and availability impact without requiring user interaction.

CVSS severity8.1
High
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in HashThemes Demo Importer 1.1.1 and earlier allows remote authenticated users to delete site data via AJAX. The hdi_install_demo AJAX action accepts a reset parameter and invokes database_reset without capability checks because its nonce is visible to all logged-in users; the routine truncates nearly all database tables and then clear_uploads removes wp-content/uploads files. Any logged-in account, including a subscriber, can trigger permanent content loss, causing site integrity and availability impact without requiring user interaction.

The record

CVE
CVE-2021-39333
Published
Nov 1, 2021
Updated
Mar 31, 2025
Vendor
HashThemes
Product
HashThemes Demo Importer
Classifications
CWE-284, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 2025Record 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=1.1.1 <=1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HashThemes · HashThemes Demo Importerversion=1.1.1 <=1.1.1

Published CVSS scores

8.1WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1485Data Destruction

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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