---
id: CVE-2026-93767
title: >-
  Tainacan <= 1.3.0 - Authenticated (Subscriber+) Path Traversal to Arbitrary
  File Read via 'guid' Parameter
summary: >-
  The Tainacan plugin for WordPress is vulnerable to Directory Traversal in all
  versions up to, and including, 1.3.0 via the 'guid' parameter parameter. This
  makes it possible for authenticated attackers, with subscriber-level access
  and a…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-22
vendor: tainacan
product: Tainacan
affected:
  - Tainacan <= 1.3.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T15:44:24.334833Z'
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:44:36.511Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-93767'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/4ff75bf6-c8c3-43f5-bc71-0e54e892e664?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-background-processes-controller.php#L393
  - url: >-
      https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-background-processes-controller.php#L418
  - url: >-
      https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-background-processes-controller.php#L391
  - url: >-
      https://plugins.trac.wordpress.org/browser/tainacan/tags/1.3.0/classes/api/endpoints/class-tainacan-rest-background-processes-controller.php#L147
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3733197%40tainacan&new=3733197%40tainacan
tags:
  - cve.org
epss: 0.00584
epssPercentile: 0.46764
ingestedAt: '2026-10-16T06:00:00.393Z'
---

## Overview

The Tainacan plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 1.3.0 via the 'guid' parameter parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. This vulnerability is exploitable only when the uploads/tainacan directory does not exist on the server, as this condition causes realpath() to return false, collapsing the base path to an empty string and rendering the containment check ineffective.

## Affected

- `Tainacan <= 1.3.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.