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CVE-2026-109574— Hugo before v0.167.0 Path Traversal via css.Sass Import Fallback

Quick assessment

Affected
gohugoio hugo
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.

Hugo 在 v0.167.0 版本之前，在 css.Sass 功能中存在一个路径遍历漏洞。该漏洞允许恶意主题或模块通过 Sass 编译器的导入回退机制，读取项目根目录之外的文件。攻击者可以发送带有相对路径、绝对路径或符号链接的 @import 或 @use 目标的样式表，从而将可读取的文件编译并输出到已发布的站点 CSS 中。

CVSS 5.5 · Medium EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1110.003 · Password Spraying

Affected Version Matrix 2

VendorProduct Version RangeStatus
gohugoio hugo < 0.167.0 affected
0.167.0 unaffected
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I. Basic Information for CVE-2026-109574

Vulnerability Information
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Vulnerability Title
Hugo before v0.167.0 Path Traversal via css.Sass Import Fallback
Source: CVE Program / CVE List V5
Vulnerability Description
Hugo before v0.167.0 contains a path traversal vulnerability in css.Sass that allows malicious themes or modules to read files outside the project root through the Sass compiler's import fallback. Attackers can ship stylesheets with relative, absolute, or symlinked @import or @use targets to compile readable files into the published site CSS.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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
gohugoio hugo 0 ~ 0.167.0 -

II. Public POCs for CVE-2026-109574

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III. Intelligence Information for CVE-2026-109574

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Vendor Advisories for CVE-2026-109574 (2)

Same Patch Batch · gohugoio · 2026-10-12 · 4 CVEs total

CVE-2026-109595 5.5 MEDIUM Hugo v0.84.0 before v0.167.0 Path Traversal via js.Build ESBuild Resolver
CVE-2026-109596 5.5 MEDIUM Hugo from v0.162.0 before v0.167.0 Symlink File Disclosure via Nested Mount Ancestor
CVE-2026-109597 5.4 MEDIUM Hugo v0.60.0 before v0.167.0 Stored XSS via Table of Contents Heading IDs

IV. Related Vulnerabilities

Same product: hugo
Same vendor: gohugoio
Same weakness: CWE-22

V. Comments for CVE-2026-109574

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