Vulnerability-Lookup

GHSA-HRJ5-RW8J-34QJ

Vulnerability from github – Published: 2026-10-08 06:31 – Updated: 2026-10-08 06:31

Details

linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.

Severity

3.4 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-107449"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-08T05:17:04Z",
    "severity": "LOW"
  },
  "details": "linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.",
  "id": "GHSA-hrj5-rw8j-34qj",
  "modified": "2026-10-08T06:31:19Z",
  "published": "2026-10-08T06:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107449"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kashishtopi/heimdall-unauth-ssrf"
    },
    {
      "type": "WEB",
      "url": "https://github.com/linuxserver/Heimdall/blob/9ad5864a80d7025db1e6eab8eb2981c165b0ddff/app/SupportedApps.php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-107449 (GCVE-0-2026-107449)

Vulnerability from cvelistv5 – Published: 2026-10-08 04:28 – Updated: 2026-10-08 17:35

Summary

Severity

3.4 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-08 17:34 UTC

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2379 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/kashishtopi/heimdall-unauth-ssrf	exploittechnical-description
https://github.com/linuxserver/Heimdall/blob/9ad5…	product

Impacted products

1 product

Vendor	Product	Version
linuxserver	Heimdall	Affected: 0 , ≤ 2.8.3 (semver)

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JSON

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{
  "containers": {
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-107449",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-08T17:34:52.742208Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-08T17:35:00.370Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "modules": [
            "Enhanced app test/livestats (test_config",
            "get_stats)"
          ],
          "product": "Heimdall",
          "programFiles": [
            "app/SupportedApps.php",
            "app/Http/Controllers/ItemController.php"
          ],
          "programRoutines": [
            {
              "name": "SupportedApps::execute"
            }
          ],
          "repo": "https://github.com/linuxserver/Heimdall",
          "vendor": "linuxserver",
          "versions": [
            {
              "lessThanOrEqual": "2.8.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
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      ],
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.4,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
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          "url": "https://github.com/kashishtopi/heimdall-unauth-ssrf"
        },
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          "tags": [
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          "url": "https://github.com/linuxserver/Heimdall/blob/9ad5864a80d7025db1e6eab8eb2981c165b0ddff/app/SupportedApps.php"
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  "cveMetadata": {
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    "cveId": "CVE-2026-107449",
    "datePublished": "2026-10-08T04:28:17.619Z",
    "dateReserved": "2026-10-08T04:28:16.780Z",
    "dateUpdated": "2026-10-08T17:35:00.370Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.
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GHSA-HRJ5-RW8J-34QJ

CVE-2026-107449 (GCVE-0-2026-107449)

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