Vulnerability-Lookup

ubuntu-cve-2026-89259

Vulnerability from osv_ubuntu

Published

2026-09-14 00:00

Modified

2026-09-14 00:00

Summary

Details

Hugo is a static site generator. From v0.161.0, Hugo executes Node tools under Node's permission model, but TailwindCSS — included in the default security.exec.allow list — requires a highly permissive configuration (--allow-addons, --allow-child-process, --allow-worker). As a result, the restrictions intended by the fix for GHSA-x597-9fr4-5857 could still be bypassed, allowing a Node tool invoked during a build to read and write files outside the project's working directory. Affected versions are those after v0.43; the issue was fixed in v0.165.0 by removing tailwindcss from the default security.exec.allow list. Users who do not use TailwindCSS, or who only build trusted sites, are not affected. As a workaround, users can define a restrictive security.exec.allow list in hugo.toml.

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                    
                      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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-89259	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-89259	REPORT
	https://github.com/gohugoio/hugo/security/advisor…	REPORT
	https://www.vulncheck.com/advisories/hugo-before-…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-spf13-hugo-dev",
            "binary_version": "0.15+git20160206.203.ed23711-1"
          },
          {
            "binary_name": "hugo",
            "binary_version": "0.15+git20160206.203.ed23711-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "hugo",
        "purl": "pkg:deb/ubuntu/hugo@0.15+git20160206.203.ed23711-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.15+git20160109.147.dd1d655-1",
        "0.15+git20160109.147.dd1d655-2",
        "0.15+git20160128.179.5def6d9-1",
        "0.15+git20160206.203.ed23711-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-gohugoio-hugo-dev",
            "binary_version": "0.40.1-1"
          },
          {
            "binary_name": "hugo",
            "binary_version": "0.40.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "hugo",
        "purl": "pkg:deb/ubuntu/hugo@0.40.1-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.25.1-2",
        "0.26-1",
        "0.35-1",
        "0.37.1-1",
        "0.38-1",
        "0.39-1",
        "0.40-1",
        "0.40.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "hugo",
            "binary_version": "0.68.3-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "hugo",
        "purl": "pkg:deb/ubuntu/hugo@0.68.3-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.57.2-1",
        "0.58.3-1",
        "0.59.1-1.1",
        "0.68.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "hugo",
            "binary_version": "0.92.2-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "hugo",
        "purl": "pkg:deb/ubuntu/hugo@0.92.2-1ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.80.0-6",
        "0.89.4-2",
        "0.90.0-1",
        "0.90.1-1",
        "0.91.0-1",
        "0.91.2-1",
        "0.92.0-1",
        "0.92.1-1build1",
        "0.92.2-1",
        "0.92.2-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "hugo",
            "binary_version": "0.123.7-1ubuntu0.3+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "hugo",
        "purl": "pkg:deb/ubuntu/hugo@0.123.7-1ubuntu0.3+esm2?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.113.0-3",
        "0.119.0-2",
        "0.120.3-1",
        "0.120.4-1",
        "0.121.2-1",
        "0.122.0-1",
        "0.123.7-1build1",
        "0.123.7-1ubuntu0.1",
        "0.123.7-1ubuntu0.2",
        "0.123.7-1ubuntu0.2+esm1",
        "0.123.7-1ubuntu0.3",
        "0.123.7-1ubuntu0.3+esm1",
        "0.123.7-1ubuntu0.3+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "hugo",
            "binary_version": "0.154.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "hugo",
        "purl": "pkg:deb/ubuntu/hugo@0.154.5-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.131.0-1",
        "0.152.2-1",
        "0.153.1-3",
        "0.153.2-1",
        "0.154.2-2",
        "0.154.3-1",
        "0.154.5-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Hugo is a static site generator. From v0.161.0, Hugo executes Node tools under Node\u0027s permission model, but TailwindCSS \u2014 included in the default security.exec.allow list \u2014 requires a highly permissive configuration (--allow-addons, --allow-child-process, --allow-worker). As a result, the restrictions intended by the fix for GHSA-x597-9fr4-5857 could still be bypassed, allowing a Node tool invoked during a build to read and write files outside the project\u0027s working directory. Affected versions are those after v0.43; the issue was fixed in v0.165.0 by removing tailwindcss from the default security.exec.allow list. Users who do not use TailwindCSS, or who only build trusted sites, are not affected. As a workaround, users can define a restrictive security.exec.allow list in hugo.toml.",
  "id": "UBUNTU-CVE-2026-89259",
  "modified": "2026-09-14T00:00:00Z",
  "published": "2026-09-14T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-89259"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89259"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/gohugoio/hugo/security/advisories/GHSA-vrm6-x8vp-mv2r"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/hugo-before-0.165.0-insufficient-permission-restriction-via-tailwindcss"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-89259"
  ]
}

CVE-2026-89259 (GCVE-0-2026-89259)

Vulnerability from cvelistv5 – Published: 2026-09-11 11:15 – Updated: 2026-09-11 20:29

Title

Hugo before v0.165.0 Insufficient Permission Restriction via TailwindCSS

Summary

Severity

9.3 (Critical)


                        
                          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

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-11 17:11 UTC

CWE

CWE-250 - Execution with Unnecessary Privileges

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/gohugoio/hugo/security/advisor…	vendor-advisory
https://www.vulncheck.com/advisories/hugo-before-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
gohugoio	hugo	Affected: 0 , < 0.165.0 (semver) Unaffected: 0.165.0 (semver) cpe:2.3:a:gohugo:hugo::::::::

Date Public

2026-08-27 00:00

Credits

mtholmquist

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-89259",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-11T17:11:14.920833Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-11T20:29:43.170Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:golang/github.com/gohugoio/hugo",
          "product": "hugo",
          "vendor": "gohugoio",
          "versions": [
            {
              "lessThan": "0.165.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "0.165.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:gohugo:hugo:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "0.165.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "credits": [
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          "type": "finder",
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        }
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      "metrics": [
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          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
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            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
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            "exploitMaturity": "NOT_DEFINED",
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            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
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            "userInteraction": "NONE",
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            "version": "3.1"
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    "datePublished": "2026-09-11T11:15:35.062Z",
    "dateReserved": "2026-09-11T10:52:56.668Z",
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.