CVE-2026-123622 (GCVE-0-2026-123622)

Vulnerability from cvelistv5 – Published: 2026-11-06 15:00 – Updated: 2026-11-06 15:00
VLAI
Title
Usermin through 2.570 XSS via mailbox detach.cgi type Parameter
Summary
Usermin through 2.570 contains a cross-site scripting vulnerability in mailbox/detach.cgi that allows remote attackers to execute script by supplying an arbitrary type parameter that bypasses JavaScript filtering. Attackers can email an HTML attachment containing script and lure recipients to a detach.cgi link with type=text/html to run script in the victim's authenticated Usermin session.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
webmin usermin Affected: 0 , ≤ 2.570 (custom)
    cpe:2.3:a:webmin:usermin:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-11-05 00:00
Credits
leediay153 from Viettel Post Ilia Ross (iliaross)
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/webmin/usermin",
          "product": "usermin",
          "vendor": "webmin",
          "versions": [
            {
              "lessThanOrEqual": "2.570",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:webmin:usermin:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "2.570",
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                }
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              "operator": "OR"
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          "type": "finder",
          "value": "leediay153 from Viettel Post"
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        }
      ],
      "datePublic": "2026-11-05T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Usermin through 2.570 contains a cross-site scripting vulnerability in mailbox/detach.cgi that allows remote attackers to execute script by supplying an arbitrary type parameter that bypasses JavaScript filtering. Attackers can email an HTML attachment containing script and lure recipients to a detach.cgi link with type=text/html to run script in the victim\u0027s authenticated Usermin session."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
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            "vulnIntegrityImpact": "NONE"
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
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      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2026-11-06T15:00:57.104Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Issue #142",
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/webmin/usermin/issues/142"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/webmin/usermin"
        },
        {
          "name": "Fix commit c5c43b9",
          "tags": [
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          "url": "https://github.com/webmin/usermin/commit/c5c43b9ad04a60809ac2eb271bf8f3d0fec2e46a"
        },
        {
          "name": "detach.cgi content type handling",
          "tags": [
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          ],
          "url": "https://github.com/webmin/usermin/blob/2.570/mailbox/detach.cgi#L80-L83"
        },
        {
          "name": "Researcher write-up",
          "tags": [
            "technical-description"
          ],
          "url": "https://hackmd.io/@leediay/H144QKY6zl"
        },
        {
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          "tags": [
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          "url": "https://www.vulncheck.com/advisories/usermin-through-2.570-xss-via-mailbox-detach-cgi-type-parameter"
        }
      ],
      "title": "Usermin through 2.570 XSS via mailbox detach.cgi type Parameter",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-123622",
    "datePublished": "2026-11-06T15:00:57.104Z",
    "dateReserved": "2026-11-06T01:04:42.202Z",
    "dateUpdated": "2026-11-06T15:00:57.104Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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