Bug 2550016 (CVE-2026-109596)

Summary: CVE-2026-109596 hugo: Hugo: Information disclosure via improper link resolution in nested mounts
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: anjoseph, eglynn, jjoyce, jprabhak, jpretori, jschluet, lchilton, lhh, mburns, mgarciac, rhel-process-autobot, sfeifer, watson-tool-maintainers, wtam
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in Hugo. An improper link resolution vulnerability allows an attacker who controls a malicious theme or module to disclose sensitive files outside the intended project root. By placing a symbolic link (a pointer referencing another file location) or filesystem junction within a virtual ancestor directory, an attacker can cause Hugo to read and publish local host files during the site build process.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2555646, 2555647    
Bug Blocks:    

Description OSIDB Bzimport 2026-10-12 22:43:03 UTC 
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.