CVE-2026-58403

Hugo is a static site generator. From v0.123.0 through v0.163.0, Hugo's virtual filesystem is designed so that files under a mount cannot reach outside the mount tree, but a regression caused RootMappingFs.statRoot to call Stat, which follows symlinks, instead of Lstat, so a direct os.ReadFile "somefile" where somefile was a symlink pointing outside the mount would return the target's contents. This effectively let a symlink planted inside a theme or local mount read arbitrary files reachable to the user running hugo. This issue is fixed in v0.163.1.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/gohugoio/hugo/commit/cf9c8f93ca2a2838ce378f9e36d052ac2f79e229	Patch
https://github.com/gohugoio/hugo/pull/15020	Issue Tracking
https://github.com/gohugoio/hugo/releases/tag/v0.163.1	Release Notes
https://github.com/gohugoio/hugo/security/advisories/GHSA-c3wq-j5vh-68rc	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gohugo:hugo:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-06 20:16

Updated : 2026-07-08 03:05

NVD link : CVE-2026-58403

Mitre link : CVE-2026-58403

CVE.ORG link : CVE-2026-58403

JSON object : View

Products Affected

gohugo

hugo

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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