CVE-2026-3891 is a critical arbitrary file upload vulnerability affecting the Pix for WooCommerce plugin for WordPress, specifically versions up to and including 1.5.0. This flaw stems from missing capability checks and file type validation, allowing unauthenticated attackers to upload malicious files. Rated 9.8 CRITICAL on the CVSS scale, this vulnerability can be exploited remotely with low complexity and no user interaction or authentication, potentially leading to remote code execution and full compromise of the affected site. Currently, there is no evidence of active exploitation, nor are public exploit modules or significant community discussion available for this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Linknacional | Pix For WooCommerce | >= 0, <= 1.5.0CNA affecteddefault unaffected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.