Vulnerability-Lookup

FKIE_CVE-2026-7460

Vulnerability from fkie_nvd - Published: 2026-05-20 04:16 - Updated: 2026-07-24 08:10

Severity

7.4 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

Summary

mailcow-dockerized contains a stored cross-site scripting vulnerability in the administrator Queue Manager. The Queue Manager fetches mail queue entries from /api/v1/get/mailq/all, copies server-controlled Postfix queue fields into DataTables rows, and renders several of those fields as HTML without adequate output encoding. This issue affects mailcow-dockerized: 2026-03b.

References

	URL	Tags
	help@fluidattacks.com	https://fluidattacks.com/advisories/mojabi
	help@fluidattacks.com	https://github.com/mailcow/mailcow-dockerized
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://fluidattacks.com/advisories/mojabi

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "MacOS",
            "Linux"
          ],
          "product": "mailcow-dockerized",
          "vendor": "mailcow",
          "versions": [
            {
              "status": "affected",
              "version": "2026-03b"
            }
          ]
        }
      ],
      "source": "help@fluidattacks.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "mailcow-dockerized contains a stored cross-site scripting vulnerability in the administrator Queue Manager. The Queue Manager fetches mail queue entries from /api/v1/get/mailq/all, copies server-controlled Postfix queue fields into DataTables rows, and renders several of those fields as HTML without adequate output encoding.\n\n\n\nThis issue affects mailcow-dockerized: 2026-03b."
    },
    {
      "lang": "es",
      "value": "mailcow-dockerized contiene una vulnerabilidad de cross-site scripting almacenado en el Gestor de Colas del administrador. El Gestor de Colas obtiene entradas de la cola de correo de /api/v1/get/mailq/all, copia campos de la cola de Postfix controlados por el servidor en filas de DataTables y renderiza varios de esos campos como HTML sin una codificaci\u00f3n de salida adecuada.\n\nEste problema afecta a mailcow-dockerized: 2026-03b."
    }
  ],
  "id": "CVE-2026-7460",
  "lastModified": "2026-07-24T08:10:00.150",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "help@fluidattacks.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-7460",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-20T12:48:11.263955Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-20T04:16:56.270",
  "references": [
    {
      "source": "help@fluidattacks.com",
      "url": "https://fluidattacks.com/advisories/mojabi"
    },
    {
      "source": "help@fluidattacks.com",
      "url": "https://github.com/mailcow/mailcow-dockerized"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://fluidattacks.com/advisories/mojabi"
    }
  ],
  "sourceIdentifier": "help@fluidattacks.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "help@fluidattacks.com",
      "type": "Secondary"
    }
  ]
}

CVE-2026-7460 (GCVE-0-2026-7460)

Vulnerability from cvelistv5 – Published: 2026-05-20 02:19 – Updated: 2026-05-20 12:48

Title

mailcow-dockerized 2026-03b - Stored XSS in Queue Manager via unescaped

Summary

Severity

7.4 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-20 12:48 UTC

CWE

CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')

Assigner

Fluid Attacks

References

2 references

URL	Tags
https://fluidattacks.com/advisories/mojabi	third-party-advisory
https://github.com/mailcow/mailcow-dockerized	product

Impacted products

1 product

Vendor	Product	Version
mailcow	mailcow-dockerized	Affected: 2026-03b

Credits

Fluid Attacks' AI SAST Scanner Oscar Naveda

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-7460",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-20T12:48:11.263955Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-20T12:48:15.205Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://fluidattacks.com/advisories/mojabi"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "MacOS",
            "Linux"
          ],
          "product": "mailcow-dockerized",
          "vendor": "mailcow",
          "versions": [
            {
              "status": "affected",
              "version": "2026-03b"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Fluid Attacks\u0027 AI SAST Scanner"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Oscar Naveda"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003emailcow-dockerized contains a stored cross-site scripting vulnerability in the administrator Queue Manager. The Queue Manager fetches mail queue entries from \u003ccode\u003e/api/v1/get/mailq/all\u003c/code\u003e, copies server-controlled Postfix queue fields into DataTables rows, and renders several of those fields as HTML without adequate output encoding.\u003c/p\u003e\u003cp\u003eThis issue affects mailcow-dockerized: 2026-03b.\u003c/p\u003e"
            }
          ],
          "value": "mailcow-dockerized contains a stored cross-site scripting vulnerability in the administrator Queue Manager. The Queue Manager fetches mail queue entries from /api/v1/get/mailq/all, copies server-controlled Postfix queue fields into DataTables rows, and renders several of those fields as HTML without adequate output encoding.\n\n\n\nThis issue affects mailcow-dockerized: 2026-03b."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-592",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-592 Stored XSS"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-79",
              "description": "CWE-79 Improper neutralization of input during web page generation (\u0027cross-site scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-20T02:19:07.926Z",
        "orgId": "84fe0718-d6bb-4716-a7e8-81a6d1daa869",
        "shortName": "Fluid Attacks"
      },
      "references": [
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://fluidattacks.com/advisories/mojabi"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/mailcow/mailcow-dockerized"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "mailcow-dockerized 2026-03b - Stored XSS in Queue Manager via unescaped",
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  "cveMetadata": {
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    "assignerShortName": "Fluid Attacks",
    "cveId": "CVE-2026-7460",
    "datePublished": "2026-05-20T02:19:07.926Z",
    "dateReserved": "2026-04-29T18:02:06.122Z",
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.