CVE-2026-3891Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload
- 9.8CriticalCVSS base score
- 34.3%Exploitation in 30 daysEPSS · top 1.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 3Public exploitsMetasploit, Nuclei and Exploit-DB
Description
The Pix for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing capability check and missing file type validation in the 'lkn_pix_for_woocommerce_c6_save_settings' function in all versions up to, and including, 1.5.0. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module, a Nuclei template and an Exploit-DB entry for it.
Show the exploits3
Metasploit modules1 module
- WordPress Unauthenticated RCE via Pix for WooCommerce plugin (Metasploit module) (opens in a new tab)
exploit/multi/http/wp_plugin_pix_unauth_rce_cve_2026_3891Rank excellentdisclosed 12 Mar 2026
Nuclei templates1 template
- Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload (Nuclei template) (opens in a new tab)
http/cves/2026/CVE-2026-3891.yamlSeverity critical
Exploit-DB1 entry
- WooCommerce 1.5.0 - Unauthenticated Arbitrary File Upload (Exploit-DB entry) (opens in a new tab)
EDB-ID 52642webapps, multiplepublished 17 Aug 2026Not verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By Wordfence
- 3 days later
· 3 days later
Published
- 26 days later
· 26 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 34.3% · top 1.6% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
linknacional · Pix for WooCommerce
- affected ≤ 1.5.0
References
References3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/20188fd3-c330-4c76-912b-72731e14c450?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-pix-for-woocommerce/tags/1.4.0/Includes/LknPaymentPixForWoocommercePixC6.php#L694 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset/3480639/payment-gateway-pix-for-woocommerce#file56 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-11760 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-3891)Record last updated .