CVE-2026-108740 (GCVE-0-2026-108740)

Vulnerability from cvelistv5 – Published: 2026-10-11 12:19 – Updated: 2026-10-11 12:19
VLAI
Title
GoatCounter through 2.7.0 Privilege Escalation via /user/pref Mass Assignment
Summary
GoatCounter through 2.7.0 contains a mass assignment privilege escalation vulnerability in the userPrefSave handler that allows logged-in users to modify protected account fields via form-encoded requests. Attackers with read-only access can POST user.access[all]=* and user.email_verified=true to /user/pref, bypassing readonly tags to gain superuser or admin access.
CWE
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5499 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
arp242 GoatCounter Affected: 0 , ≤ 2.7.0 (semver)
guessed Create a notification for this product.
Date Public
2026-10-10 00:00
Show details on NVD website

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          "product": "GoatCounter",
          "repo": "https://github.com/arp242/goatcounter",
          "vendor": "arp242",
          "versions": [
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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        }
      ],
      "metrics": [
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            "subConfidentialityImpact": "NONE",
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      "providerMetadata": {
        "dateUpdated": "2026-10-11T12:19:44.911Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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          "tags": [
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          "url": "https://hackmd.io/@haind03/goatcounter-user-pref-access-mass-assignment-20261011"
        },
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          "tags": [
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          "url": "https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/handlers/settings_user.go#L33-L99"
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        },
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          "url": "https://github.com/arp242/goatcounter"
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          "tags": [
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      ],
      "title": "GoatCounter through 2.7.0 Privilege Escalation via /user/pref Mass Assignment",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-108740",
    "datePublished": "2026-10-11T12:19:44.911Z",
    "dateReserved": "2026-10-11T01:52:55.041Z",
    "dateUpdated": "2026-10-11T12:19:44.911Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
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          }
        ],
        "id": "CVE-2026-108740",
        "lastModified": "2026-10-11T13:17:18.527",
        "metrics": {
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                "confidentialityImpact": "LOW",
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          "cvssMetricV40": [
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                "Recovery": "NOT_DEFINED",
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                "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": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
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            "url": "https://github.com/arp242/goatcounter"
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            "url": "https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/handlers/settings_user.go#L33-L99"
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          },
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            "url": "https://hackmd.io/@haind03/goatcounter-user-pref-access-mass-assignment-20261011"
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}



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