{"id":"CVE-2026-109596","title":"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","summary":"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 …","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cwe":["CWE-59"],"vendor":"gohugoio","product":"hugo","affected":["hugo >= 0.162.0 < 0.167.0"],"patched":["hardened_images"],"published":"2026-10-12","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:15:07.947","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109596","references":[{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-6c8w-mpp8-9w47","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/hugo-from-0.162.0-before-0.167.0-symlink-file-disclosure-via-nested-mount-ancestor","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109596.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-109596"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550016"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109596"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109596"},{"url":"https://access.redhat.com/errata/RHSA-2026:80677"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00144,"epssPercentile":0.03648,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-14T12:04:35.108374Z"},"ingestedAt":"2026-10-13T00:09:02.613Z","slug":"CVE-2026-109596","body":"## Overview\n\nHugo 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:80677** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:80677)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat OpenShift GitOps, Red Hat OpenStack Platform 18.0 · no fix planned: Red Hat Enterprise Linux 10, Red Hat OpenShift GitOps, Red Hat OpenStack Platform 18.0 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109596.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}