Tainacan Plugin up to 1.3.0 on WordPress uploads/tainacan realpath guid path traversal

Summaryinfo

A vulnerability was found in Tainacan Plugin up to 1.3.0. It has been rated as problematic. The affected element is the function realpath of the file uploads/tainacan. This manipulation of the argument guid causes path traversal. This vulnerability is handled as CVE-2026-93767. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Tainacan Plugin up to 1.3.0 and classified as problematic. Affected by this vulnerability is the function realpath of the file uploads/tainacan. The manipulation of the argument guid with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

The advisory is shared at wordfence.com. This vulnerability is known as CVE-2026-93767 since 09/18/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/16/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Name

• Tainacan Plugin

Version

• 1.0
• 1.1
• 1.2
• 1.3.0

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion