Vulnerability-Lookup

GHSA-6GRQ-8XF9-56FP

Vulnerability from github – Published: 2026-10-05 09:31 – Updated: 2026-10-05 09:31

Details

The specific flaw exists within the web portal listening on TCP port 443, under Configuration → Users → Users List. The vulnerability occurs in the “Microsoft Exchange mailbox” field, which fails to properly validate or sanitize user-supplied input before storing and rendering it.

By injecting malicious JavaScript into this field, an attacker can cause the payload to execute whenever the affected user properties are accessed. This can prevent access to the affected user properties and result in a denial-of-service condition within the application's user-management functionality.

Severity

1.9 (Low)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/AU:Y/R:A/V:D/RE:L/U:Amber

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{
  "affected": [],
  "aliases": [
    "CVE-2026-104808"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-05T09:17:09Z",
    "severity": "LOW"
  },
  "details": "DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTML content, resulting in a denial-of-service condition within the web application.\n\n\n\n\nThe specific flaw exists within the web portal listening on TCP port 443, under Configuration \u2192 Users \u2192 Users List. The vulnerability occurs in the \u201cMicrosoft Exchange mailbox\u201d field, which fails to properly validate or sanitize user-supplied input before storing and rendering it.\n\n\n\n\nBy injecting malicious JavaScript into this field, an attacker can cause the payload to execute whenever the affected user properties are accessed. This can prevent access to the affected user properties and result in a denial-of-service condition within the application\u0027s user-management functionality.",
  "id": "GHSA-6grq-8xf9-56fp",
  "modified": "2026-10-05T09:31:53Z",
  "published": "2026-10-05T09:31:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104808"
    },
    {
      "type": "WEB",
      "url": "https://digitalcanion.com/en/security-research/#vendor=mitel\u0026status=cna"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/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:Y/R:A/V:D/RE:L/U:Amber",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-104808 (GCVE-0-2026-104808)

Vulnerability from cvelistv5 – Published: 2026-10-05 08:30 – Updated: 2026-10-05 13:08

Title

Mitel MiVoice Office 400 stored Cross-Site Scripting

Summary

DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTML content, resulting in a denial-of-service condition within the web application. The specific flaw exists within the web portal listening on TCP port 443, under Configuration → Users → Users List. The vulnerability occurs in the “Microsoft Exchange mailbox” field, which fails to properly validate or sanitize user-supplied input before storing and rendering it. By injecting malicious JavaScript into this field, an attacker can cause the payload to execute whenever the affected user properties are accessed. This can prevent access to the affected user properties and result in a denial-of-service condition within the application's user-management functionality.

Severity

1.9 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/AU:Y/R:A/V:D/RE:L/U:Amber

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-05 13:04 UTC

CWE

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

Assigner

NCSC.ch mitre root Scorecard

References

1 reference

URL	Tags
https://digitalcanion.com/en/security-research/#v…

Impacted products

1 product

Vendor	Product	Version
Mitel	Mitel MiVoice Office 400	Affected: 11.0.96.0

Credits

Brian Mariani from DigitalCanion SA

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
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                "id": "CVE-2026-104808",
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                  },
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                "timestamp": "2026-10-05T13:04:14.743968Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
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            "subIntegrityImpact": "LOW",
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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.

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.

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GHSA-6GRQ-8XF9-56FP

CVE-2026-104808 (GCVE-0-2026-104808)

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