CVE-2026-104743 | Severity.io

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.

Related CPE's

Could not find any relations

References

https://github.com/tainacan/tainacan/commit/1cc2c179d213670ae4bd378473d6fecbc35c6357

https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php#L146

https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php#L190

https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php#L223

https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php#L266

https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/background-process/importer/class-tainacan-csv.php#L334

https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/background-process/importer/class-tainacan-csv.php#L36

https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/background-process/importer/class-tainacan-csv.php#L93

https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/background-process/importer/class-tainacan-importer.php#L255