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CVE-2026-13251— Perfmatters <= 2.6.4 - Unauthenticated Arbitrary File Read via 's' Parameter

Quick assessment

Affected
perfmatters Perfmatters
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.

perfmatters是perfmatters公司的一个性能优化插件。 perfmatters 2.6.4及之前版本存在路径遍历漏洞，该漏洞源于通过's'参数容易受到目录遍历攻击，可能导致未经身份验证的攻击者读取服务器上包含敏感信息的任意文件。

CVSS 7.5 · High EPSS 0.94% · P61

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
perfmatters Perfmatters ≤ 2.6.4 affected
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I. Basic Information for CVE-2026-13251

Vulnerability Information
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Vulnerability Title
Perfmatters <= 2.6.4 - Unauthenticated Arbitrary File Read via 's' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Perfmatters plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.6.4 via the 's' parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Exploitation requires the Local Google Fonts feature to be enabled (disabled by default), pretty permalinks to be active, and RSS feed links to remain enabled in the plugin settings.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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
Vulnerability Title
perfmatters 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
perfmatters是perfmatters公司的一个性能优化插件。 perfmatters 2.6.4及之前版本存在路径遍历漏洞，该漏洞源于通过's'参数容易受到目录遍历攻击，可能导致未经身份验证的攻击者读取服务器上包含敏感信息的任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
perfmatters Perfmatters 0 ~ 2.6.4 -

II. Public POCs for CVE-2026-13251

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III. Intelligence Information for CVE-2026-13251

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Patches & Fixes for CVE-2026-13251 (1)

Vendor Advisories for CVE-2026-13251 (1)

IV. Related Vulnerabilities

Same product: Perfmatters
Same vendor: perfmatters
Same weakness: CWE-22

V. Comments for CVE-2026-13251

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