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CVE-2026-104743

MEDIUM 4.9 CVSS 3.1
Published
October 28, 2026
Last modified
October 29, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-22
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • tainacan Tainacan — Up to and including 1.3.0

References

  • github.com https://github.com/tainacan/tainacan/commit/1cc2c179d213670ae4bd378473d6fecbc35c6357
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php#L146
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php#L190
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php#L223
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php#L266
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/background-process/importer/class-tainacan-csv.php#L334
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/background-process/importer/class-tainacan-csv.php#L36
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/background-process/importer/class-tainacan-csv.php#L93
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/background-process/importer/class-tainacan-importer.php#L255
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/tainacan/tags/1.4.0/classes/api/endpoints/class-tainacan-rest-importers-controller.php
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/e16bda6d-0818-468b-9114-82a8f5f68caf?source=cve
  • nvd.nist.gov Official NVD record