CVE-2026-104743 Details
Description
The Tainacan plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 1.3.0 via the 'tmp_file' parameter parameter. This makes it possible for authenticated attackers, with editor-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The poisoned importer path is persisted to the database and later triggered via a separate GET request to the /source_info endpoint, which passes the attacker-controlled path to fopen() and fgetcsv() and returns parsed file contents in the REST response.
A directory traversal vulnerability has been identified in the Tainacan plugin for WordPress, affecting all versions through 1.3.0. The vulnerability arises from the 'tmp_file' parameter, allowing authenticated attackers with editor-level access or higher to read arbitrary files on the server. This could lead to the exposure of sensitive information. The exploited file path is saved in the database and can be accessed later through a GET request to the '/source_info' endpoint, where the path is passed to 'fopen()' and 'fgetcsv()', with the file contents returned in the REST response.
Users are advised to update the Tainacan WordPress plugin to version 1.4.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 28, 2026CISA-ADP
Assessed Oct 29, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Tainacan | <= 1.3.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 29, 2026 | CVE Modified | CISA-ADP |
| Oct 28, 2026 | New CVE Received | [email protected] |