6.5

CVE-2026-58403: gohugo hugo Link Following

CVSS: 6.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-58403DEBIAN-CVE-2026-58403GHSA-c3wq-j5vh-68rc
Published 06-07-2026Last modified 06-07-2026
Open JSON

Vulnerability summary

CVE-2026-58403 is a medium (CVSS 6.5) Link Following vulnerability in gohugo hugo. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39.7% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.47%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2026:36862

Timeline

  1. 06-07-2026
    PublishedVulnerability first disclosed.
  2. 06-07-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

7 scores · 5 sources · 2 versions

EPSS trend

Probability

0.47%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

0.00 pp

From 0.47% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.47%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • hugoAll versions (No fix recorded) | < 0.165.0-1
Github.com/gohugoio1 product
  • hugo≥ 0.123.0, < 0.163.1
Gohugo1 product
  • hugo≥ 0.123.0, < 0.163.1
Gohugoio1 product
  • hugo≥ 0.123.0, < 0.163.1
Ubuntu1 product
  • hugoAll versions (No fix recorded)

5 vendors · 5 products

References

8 links