Vulnerability-Lookup

CVE-2026-70588 (GCVE-0-2026-70588)

Vulnerability from cvelistv5 – Published: 2026-08-04 21:03 – Updated: 2026-08-04 21:03

Title

Ghost: Cross-Site Scripting in Universal Import

Summary

Ghost is a Node.js content management system. From 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1.

Severity

5 (Medium)


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

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/TryGhost/Ghost/security/adviso…	x_refsource_CONFIRM
https://github.com/TryGhost/Ghost/pull/29635	x_refsource_MISC
https://github.com/TryGhost/Ghost/commit/a8bea3a4…	x_refsource_MISC
https://github.com/TryGhost/Ghost/releases/tag/v6.54.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
TryGhost	Ghost	Affected: >= 5.26.0, < 6.54.1

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Ghost",
          "vendor": "TryGhost",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 5.26.0, \u003c 6.54.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Ghost is a Node.js content management system. From 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-04T21:03:42.379Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-2gx6-7gx2-wwcf",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-2gx6-7gx2-wwcf"
        },
        {
          "name": "https://github.com/TryGhost/Ghost/pull/29635",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/TryGhost/Ghost/pull/29635"
        },
        {
          "name": "https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e"
        },
        {
          "name": "https://github.com/TryGhost/Ghost/releases/tag/v6.54.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/TryGhost/Ghost/releases/tag/v6.54.1"
        }
      ],
      "source": {
        "advisory": "GHSA-2gx6-7gx2-wwcf",
        "discovery": "UNKNOWN"
      },
      "title": "Ghost: Cross-Site Scripting in Universal Import"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-70588",
    "datePublished": "2026-08-04T21:03:42.379Z",
    "dateReserved": "2026-08-04T19:50:27.327Z",
    "dateUpdated": "2026-08-04T21:03:42.379Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-70588\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-04T21:16:38.750\",\"lastModified\":\"2026-08-04T21:16:38.750\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Ghost is a Node.js content management system. From 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"TryGhost\",\"product\":\"Ghost\",\"versions\":[{\"version\":\"\u003e= 5.26.0, \u003c 6.54.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:L\",\"baseScore\":5.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":0.7,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"references\":[{\"url\":\"https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/TryGhost/Ghost/pull/29635\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/TryGhost/Ghost/releases/tag/v6.54.1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/TryGhost/Ghost/security/advisories/GHSA-2gx6-7gx2-wwcf\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}

GHSA-2GX6-7GX2-WWCF

Vulnerability from github – Published: 2026-08-04 21:03 – Updated: 2026-08-04 21:03

Summary

Ghost: Cross-Site Scripting in Universal Import

Details

Impact

The Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content.

Vulnerable versions

This vulnerability is present in Ghost from v5.26.0 up to v6.54.0.

Patches

v6.54.1 contains a fix for this issue.

How to update

For self-hosters using Docker, find Docker's official Ghost image here. Updating a Docker-based Ghost instance is documented here.

If your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here.

Workarounds

If upgrading immediately is not possible, avoid using the Universal Import feature.

References

Ghost thanks meifukun for disclosing this vulnerability responsibly.

For more information

If you have any questions or comments about this advisory, email us at security@ghost.org.

Severity

5.0 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ghost"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.26.0"
            },
            {
              "fixed": "6.54.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-70588"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-04T21:03:51Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nThe Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v5.26.0 up to v6.54.0.\n\n### Patches\n\nv6.54.1 contains a fix for this issue.\n\n### How to update\n\nFor self-hosters using Docker, find [Docker\u0027s official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost). \n\nIf your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). \n\n### Workarounds\n\nIf upgrading immediately is not possible, avoid using the Universal Import feature.\n\n### References\n\nGhost thanks meifukun for disclosing this vulnerability responsibly.\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at [security@ghost.org](mailto:security@ghost.org).",
  "id": "GHSA-2gx6-7gx2-wwcf",
  "modified": "2026-08-04T21:03:51Z",
  "published": "2026-08-04T21:03:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-2gx6-7gx2-wwcf"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/pull/29635"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/TryGhost/Ghost"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/releases/tag/v6.54.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Ghost: Cross-Site Scripting in Universal Import"
}

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.

Action not permitted

CVE-2026-70588 (GCVE-0-2026-70588)

GHSA-2GX6-7GX2-WWCF

Impact

Vulnerable versions

Patches

How to update

Workarounds

References

For more information

Tags

Sightings

Nomenclature