Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-08-17 05:41

Modified

2026-08-17 06:10

Summary

Ghost: Cross-Site Scripting in Feature Image Captions

Details

Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "ghost",
        "purl": "pkg:bitnami/ghost"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.9.0"
            },
            {
              "fixed": "6.54.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-70596"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:ghost:ghost:*:*:*:*:*:node.js:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user\u0027s Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.",
  "id": "BIT-ghost-2026-70596",
  "modified": "2026-08-17T06:10:32.268Z",
  "published": "2026-08-17T05:41:07.465Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/pull/29635"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/releases/tag/v6.54.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70596"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Ghost: Cross-Site Scripting in Feature Image Captions"
}

CVE-2026-70596 (GCVE-0-2026-70596)

Vulnerability from cvelistv5 – Published: 2026-08-05 14:40 – Updated: 2026-08-05 17:32

Title

Ghost: Cross-Site Scripting in Feature Image Captions

Summary

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 17:31 UTC

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: >= 4.9.0, < 6.54.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-70596",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T17:31:33.896500Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-05T17:32:38.429Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Ghost",
          "vendor": "TryGhost",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.9.0, \u003c 6.54.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user\u0027s Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/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": "2026-08-05T14:40:52.224Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv"
        },
        {
          "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-pr22-p9rp-2cqv",
        "discovery": "UNKNOWN"
      },
      "title": "Ghost: Cross-Site Scripting in Feature Image Captions"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-70596",
    "datePublished": "2026-08-05T14:40:12.295Z",
    "dateReserved": "2026-08-04T19:50:27.328Z",
    "dateUpdated": "2026-08-05T17:32:38.429Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2026-70596 (GCVE-0-2026-70596)

Tags

Sightings

Nomenclature