Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

CVE-2026-109596Hugo from v0.162.0 before v0.167.0 Symlink File Disclosure via Nested Mount Ancestor

Medium 5.5

In plain English

A medium-severity security flaw in hugo from gohugoio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.1%top 96.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Hugo from v0.162.0 before v0.167.0 contains an improper link resolution vulnerability that lets malicious themes or modules expose files outside their root via nested-mount ancestor directories. Attackers controlling a theme can place a symlink or NTFS junction at a virtual ancestor directory, causing resources.Match to list and publish local files during builds.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:14	hugo	0.167.0-1	DEBIAN-CVE-2026-109596
Ubuntu:22.04:LTS	hugo	no fix listed	UBUNTU-CVE-2026-109596
Ubuntu:26.04:LTS	hugo	no fix listed	UBUNTU-CVE-2026-109596
Ubuntu:26.10	hugo	no fix listed	UBUNTU-CVE-2026-109596

Affected products (as reported)

Vendor	Product	Versions
gohugoio	hugo	0.162.0 – before 0.167.0

Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-6c8w-mpp8-9w47) vendor-advisory
VulnCheck Advisory: Hugo from v0.162.0 before v0.167.0 Symlink File Disclosure via Nested Mount Ancestor third-party-advisory