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A reflected cross-site scripting (XSS) vulnerability exists in EMX Tecnologia Gestao X Business Suite 8.4 and earlier. The vulnerability is…

cve CVE-2026-79419 1 source, 1 claim · Watch

NVD writes:
A reflected cross-site scripting (XSS) vulnerability exists in EMX Tecnologia Gestao X Business Suite 8.4 and earlier. The vulnerability is caused by insufficient validation and sanitization of the mensagem parameter in the /Configuracao/Imagens.aspx endpoint, allowing an authenticated attacker to inject arbitrary JavaScript code that is reflected and executed in the context of a victim's browser. the claim
Severity
HIGH NVD
CVSS
8.7 NVD
Vendor
n/a NVD
Product
n/a NVD
CWE
CWE-79 NVD

How far exploitation has got

  1. No public code known
  2. Proof of concept
  3. Proof of concept, verified
  4. A Metasploit module
  5. Exploited in the wild
  6. Used in ransomware campaigns

Timeline

2026-09-04first spoke of it: A reflected cross-site scripting (XSS) vulnerability exists in EMX Tecnologia Gestao X Business Suite 8.4 and earlier. The vulnerability is caused by insufficient validation and sanitization of the mensagem parameter in the /Configuracao/Imagens.aspx endpoint, allowing an authenticated attacker to inject arbitrary JavaScript code that is reflected and executed in the context of a victim's browser.NVD

A reflected cross-site scripting (XSS) vulnerability exists in EMX Tecnologia Gestao X Business Suite 8.4 and earlier. The vulnerability is caused by insufficient validation and sanitization of the mensagem parameter in the /Configuracao/Imagens.aspx endpoint, allowing an authenticated attacker to inject arbitrary JavaScript code that is reflected and executed in the context of a victim's browser.

What it is to other things

affectsemxtecnologia/gestao_x_business_suite
NVD
made_byemxtecnologia
NVD

In words only, so not counted until a person confirms one:

made_byn_a
NVD says “n/a”
affectsn_a/n_a
NVD says “n/a · n/a”
Every value, with what each source said and its receipt
PropertySourceSaidMeans here
Automatable
automatable
NVDno
At least one of those steps needs a person.
receipt
Source
NVD
Its words
no
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].automatable
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCno
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "n/a",
            "vendor": "n/a",
            "versions": [
              {
                "status": "affected",
                "version": "n/a"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
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                "versionEndIncluding": "8.4",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
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      }
    ],
    "id": "CVE-2026-79419",
    "lastModified": "2026-09-17T19:20:50.983",
    "metrics": {
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—
CVSS
cvss
NVD8.7
receipt
Source
NVD
Its words
8.7
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseScore || field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
What the source handed over
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      }
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}
—
CVSS vector
cvss_vector
NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
receipt
Source
NVD
Its words
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.vectorString || field:cve.metrics.cvssMetricV31[].cvssData.vectorString
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "n/a",
            "vendor": "n/a",
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}
—
CWE
cwe
NVDCWE-79
receipt
Source
NVD
Its words
CWE-79
Read by
field:cve.weaknesses[].description[].value
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCCWE-79
2026-09-29 09:45 UTC—
What the source handed over
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}
—
Exploitation
exploitation
NVDpoc
A public proof of concept exists, or exploitation is trivial.
receipt
Source
NVD
Its words
poc
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].exploitation
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCpoc
2026-09-29 09:45 UTC—
What the source handed over
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—
Product
product
NVDn/a
receipt
Source
NVD
Its words
n/a
Read by
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Said since
2026-09-29 17:49 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-09-29 17:49 UTCn/a
2026-09-29 09:45 UTC—
What the source handed over
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—
Severity
severity
NVDHIGH
From 7.0 to 8.9.
receipt
Source
NVD
Its words
HIGH
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseSeverity || field:cve.metrics.cvssMetricV31[].cvssData.baseSeverity
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCHIGH
2026-09-29 09:45 UTC—
What the source handed over
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high
Status
status
NVDAnalyzed
receipt
Source
NVD
Its words
Analyzed
Read by
field:cve.vulnStatus
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
What the source handed over
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—
Technical impact
technical_impact
NVDtotal
The attacker gains full control of the component, or all of its information.
receipt
Source
NVD
Its words
total
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].technicalImpact
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCtotal
2026-09-29 09:45 UTC—
What the source handed over
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            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.3,
          "impactScore": 5.8,
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-79419",
            "options": [
              {
                "exploitation": "poc"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-17T16:20:25.159980Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T16:18:00.250",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
          "Exploit",
          "Technical Description",
          "Third Party Advisory"
        ],
        "url": "https://drive.google.com/file/d/1QVH1MRo3G4KqmBORkhXITzcYmO_BDjWc/view"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Product"
        ],
        "url": "https://emxtecnologia.com.br/gestao-x-business-suite/"
      },
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "tags": [
          "Exploit",
          "Technical Description",
          "Third Party Advisory"
        ],
        "url": "https://drive.google.com/file/d/1QVH1MRo3G4KqmBORkhXITzcYmO_BDjWc/view"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-79"
          }
        ],
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  }
}
—
Vendor
vendor
NVDn/a
receipt
Source
NVD
Its words
n/a
Read by
field:cve.affected[].affectedData[].vendor
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-09-29 17:49 UTCn/a
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "n/a",
            "vendor": "n/a",
            "versions": [
              {
                "status": "affected",
                "version": "n/a"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:emxtecnologia:gestao_x_business_suite:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "00CA9145-3202-4C0A-929A-2B863840E83A",
                "versionEndIncluding": "8.4",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "A reflected cross-site scripting (XSS) vulnerability exists in EMX Tecnologia Gestao X Business Suite 8.4 and earlier. The vulnerability is caused by insufficient validation and sanitization of the mensagem parameter in the /Configuracao/Imagens.aspx endpoint, allowing an authenticated attacker to inject arbitrary JavaScript code that is reflected and executed in the context of a victim's browser."
      }
    ],
    "id": "CVE-2026-79419",
    "lastModified": "2026-09-17T19:20:50.983",
    "metrics": {
      "cvssMetricV31": [
        {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
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            "confidentialityImpact": "HIGH",
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      "ssvcV203": [
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      },
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      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Analyzed",
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        "type": "Secondary"
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    ]
  }
}
—
Every claim, by kind

vulnerability

A reflected cross-site scripting (XSS) vulnerability exists in EMX Tecnologia Gestao X Business Suite 8.4 and earlier. The vulnerability is caused by insufficient validation and sanitization of the mensagem parameter in the /Configuracao/Imagens.aspx endpoint, allowing an authenticated attacker to inject arbitrary JavaScript code that is reflected and executed in the context of a victim's browser.
zetlyn/cve-nvd · 2026-09-04
automatable no cvss 8.7 cvss_vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N cwe CWE-79 exploitation poc product n/a severity HIGH status Analyzed technical_impact total vendor n/a source