CVE-2026-89258: critical vulnerability in gohugoio hugo
Hugo before v0.165.0 Symlink Confinement Bypass via resources.Get
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.5%
Hugo is a static site generator. In versions after v0.123.0 and before v0.165.0, symlinks in parent directories were not dropped during direct resource lookups, allowing path confinement to be bypassed. An attacker who can place — or who convinces a site author to place — a symlink inside a mounted directory (for example, in a locally vendored theme under themes/) can cause functions that perform direct lookups, such as resources.Get and os.ReadFile, to follow that symlink and read files outside the intended project boundaries, disclosing their contents in the built site. Themes mounted as Go modules fetched from GitHub have symlinks stripped on download and are not affected, and multi-directory walks (e.g. content/asset walking) are not affected. This issue is an incomplete-fix follow-up to GHSA-c3wq-j5vh-68rc and GHSA-fw87-fv5r-9fpw; it is fixed in v0.165.0.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
gohugoio · hugoRelated CVEs — gohugoio hugo
In the same product, most dangerous first.
CVE-2020-26284HIGHHugo can execute a binary from the current directory on WindowsEPSS 1.5%CVE-2024-55601MEDIUMHugo does not escape some attributes in internal templatesEPSS 0.6%CVE-2026-89259CRITICALHugo before v0.165.0 Insufficient Permission Restriction via TailwindCSSEPSS 0.6%CVE-2024-32875MEDIUMHugo doesn't escape markdown title in internal render hooksEPSS 0.5%CVE-2026-58403MEDIUMHugo symlink confinement bypass in os.ReadFileEPSS 0.5%CVE-2026-10582HIGHHugo 0.91.0 through 0.165.0 Server-Side Request Forgery via security.http.urls Lacking Destination Address ValidationEPSS 0.4%