Security readout for executives and security teams
Plain-English summary
Smart Product Review for WordPress is reported vulnerable to unauthenticated arbitrary file upload through version 1.0.4. In business terms, an exposed affected site may allow an outsider to place files on the server, which could lead to site takeover, data theft, or outage.
Executive priority
Treat as urgent for any exposed WordPress site using this plugin. Prioritize rapid inventory, temporary removal where feasible, and compromise checks before routine remediation.
Technical view
The CVE describes CWE-434: missing file type validation in the Smart Product Review plugin. CVSS 3.1 is 9.8, network-accessible, low complexity, no privileges, and no user interaction. Arbitrary uploads may make remote code execution possible depending on server handling.
Likely exposure
Exposure is likely limited to WordPress sites running Codeflist Smart Product Review versions up to and including 1.0.4, especially internet-facing sites.
Exploitation context
The bundle lists an Exploit-DB reference, so public exploit information exists. The record is not marked CISA KEV, and the supplied sources do not prove active exploitation.
Researcher notes
The narrative says all versions through 1.0.4 are affected, while the affected data block is sparse. Do not assume a fixed version from this bundle; confirm vendor status before closing.
Mitigation direction
- Inventory WordPress sites for Smart Product Review versions up to 1.0.4.
- Disable or remove the plugin where business impact allows.
- Check vendor, plugin repository, and Wordfence guidance for a fixed release.
- Review server files for unexpected uploads and isolate suspicious systems.
Validation and detection
- Confirm plugin name and version from WordPress admin or trusted inventory.
- Verify all internet-facing WordPress instances are included in scope.
- Inspect upload-accessible directories for unexpected executable or recent files.
- Review WordPress and web server logs for unauthenticated upload activity.
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-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-4455 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.