CVE-2026-50134Network attack vector

Internal resource access via unchecked redirects

Published Jul 6, 2026 · Updated Jul 6, 2026

Server-side request forgery in Hugo 0.91.0 through 0.161.1 allows remote attackers to fetch disallowed hosts through HTTP redirects. resources.GetRemote checks security.http.urls only for the initial URL, then follows 3xx Location targets without applying the allow-list to each hop. Exploitation requires use of the allow-list as a trust boundary and attacker control of an allowed server, its DNS, or its response; successful requests can read reachable internal resources.

CVSS severity5.8
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in Hugo 0.91.0 through 0.161.1 allows remote attackers to fetch disallowed hosts through HTTP redirects. resources.GetRemote checks security.http.urls only for the initial URL, then follows 3xx Location targets without applying the allow-list to each hop. Exploitation requires use of the allow-list as a trust boundary and attacker control of an allowed server, its DNS, or its response; successful requests can read reachable internal resources.

The record

CVE
CVE-2026-50134
Published
Jul 6, 2026
Updated
Jul 6, 2026
Vendor
Hugo Authors
Product
Hugo
Classifications
CWE-918
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.91.0, < 0.162.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hugo Authors · Hugoversion=>= 0.91.0, < 0.162.0

Published CVSS scores

6.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
5.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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