CVE-2026-65461 CRITICAL

CVE-2026-65461: WordPress Really Simple CSV Importer plugin <= 1.3 - Arbitrary File Upload vulnerability

Vendor Webの相談所

Product Really Simple CSV Importer

Weakness CWE-434 · Unrestricted file upload

Published July 23, 2026

Last update July 23, 2026

View on NVD All CVEs

CVSS base score

9.1/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Administrator Arbitrary File Upload in Really Simple CSV Importer <= 1.3 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Really Simple CSV Importer versions up to 1.3 allow authenticated administrators to upload files without proper validation. An attacker with admin privileges can upload malicious files that may affect the confidentiality, integrity, and availability of the site and potentially other systems. The vulnerability requires high-level access but can have wide-ranging impact due to scope change.

What an attacker can do

03Attacker Capabilities

Upload malicious files to the server and potentially run code or compromise site data.

Potential impact on your site

04Site Impact

An admin account compromise could allow file uploads leading to data theft, site defacement, or server takeover.

Conditions required to exploit

05Prerequisites

Attacker must have administrator-level access to the site.

Key dates

06Disclosure timeline

July 23, 2026 CVE published

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-65461 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/434.html AskarLabs — CWE-434 write-up Unrestricted Upload of File with Dangerous Type

Related vulnerabilities

Identifiers

CVE CVE-2026-65461

CWE CWE-434

CVSS 9.1 / CRITICAL

Affected versions