---
cve: "CVE-2026-58403"
severity: "MEDIUM"
cvss: 5.9
epss: "0.5%"
vendor: "gohugoio"
kev: false
exploited: false
published: "2026-07-06 20:16:38"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-28T11:04:48+02:00"
---

# CVE-2026-58403

> 5.9 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 2a4fd58818ffdf45bbb2a97ab119bb4c46cd93f0 (Commit)
- cf9c8f93ca2a2838ce378f9e36d052ac2f79e229 (Commit)

## Referenzen

- <https://github.com/gohugoio/hugo/security/advisories/GHSA-c3wq-j5vh-68rc>
- <https://github.com/gohugoio/hugo/pull/15020>
- <https://github.com/gohugoio/hugo/commit/cf9c8f93ca2a2838ce378f9e36d052ac2f79e229>
- <https://github.com/gohugoio/hugo/releases/tag/v0.163.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-58403) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_