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CVE-2026-93767— Tainacan <= 1.3.0 - Authenticated (Subscriber+) Path Traversal to Arbitrary File Read via 'guid' Parameter

Quick assessment

Affected
tainacan Tainacan
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的 Tainacan 插件在所有 1.3.0 及更早版本中，存在通过 参数触发的目录遍历漏洞。该漏洞允许拥有订阅者（Subscriber）及以上权限的已认证攻击者读取服务器上的任意文件内容，这些文件可能包含敏感信息。该漏洞仅在服务器上的 目录不存在时才可被利用；因为在此条件下， 函数将返回 false，导致基础路径被缩减为空字符串，从而使路径限制检查失效。

CVSS 6.5 · Medium EPSS 0.58% · P47

Affected Version Matrix 1

VendorProduct Version RangeStatus
tainacan Tainacan ≤ 1.3.0 affected
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I. Basic Information for CVE-2026-93767

Vulnerability Information
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Vulnerability Title
Tainacan <= 1.3.0 - Authenticated (Subscriber+) Path Traversal to Arbitrary File Read via 'guid' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
tainacan Tainacan 0 ~ 1.3.0 -

II. Public POCs for CVE-2026-93767

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III. Intelligence Information for CVE-2026-93767

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Patches & Fixes for CVE-2026-93767 (1)

Vendor Pages for CVE-2026-93767 (4)

Other References for CVE-2026-93767 (1)

IV. Related Vulnerabilities

Same product: Tainacan
Same vendor: tainacan
Same weakness: CWE-22

V. Comments for CVE-2026-93767

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