Security readout for executives and security teams
Plain-English summary
A logged-in WordPress user could abuse Hashthemes Demo Importer 1.1.1 or earlier to delete most site data and uploaded media. This is a business continuity risk: a low-privileged or compromised account could effectively destroy a WordPress site’s content.
Executive priority
Treat as urgent for any affected WordPress site because the failure mode is site deletion. Prioritize asset inventory, plugin removal or vendor-approved remediation, and backup validation before normal change windows.
Technical view
The plugin’s AJAX functions used a nonce visible to all logged-in users as access control. That improper authorization allowed execution of a destructive function that truncated nearly all database tables and removed wp-content/uploads contents. CVSS 3.1 is 8.1 high, requiring low privileges and no user interaction.
Likely exposure
Exposure is limited to WordPress sites running Hashthemes Demo Importer version 1.1.1 or earlier. Risk is highest where many users can log in, accounts are weakly protected, or backups are incomplete.
Exploitation context
The source bundle does not show KEV listing or active exploitation. Exploitation requires an authenticated WordPress user account, but no victim interaction is required after login. Impact is destructive integrity and availability loss, not documented data disclosure.
Researcher notes
Evidence supports improper access control in authenticated AJAX handlers, mapped to CWE-284. The bundle identifies destructive database and upload deletion impact, but does not provide a named fixed version, exploitation telemetry, or indicators of compromise.
Mitigation direction
- Check vendor guidance before relying on any specific patched version.
- Disable or remove affected plugin versions until remediation is confirmed.
- Limit WordPress login access to trusted accounts only.
- Review and remove unnecessary low-privilege WordPress users.
- Confirm recent, restorable backups cover database and uploads.
Validation and detection
- Inventory WordPress sites for Hashthemes Demo Importer installations.
- Verify installed plugin versions are not 1.1.1 or earlier.
- Review WordPress user accounts for unnecessary or suspicious access.
- Confirm backup restoration has been tested recently.
- Check logs for unexpected plugin AJAX activity if available.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-39333 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H2.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/blog/2021/10/site-deletion-vulnerability-in-hashthemes-plugin/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.