CVE-2026-40242 (GCVE-0-2026-40242)

Vulnerability from cvelistv5 – Published: 2026-04-10 20:34 – Updated: 2026-04-10 20:34
VLAI?
Title
Arcane Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint
Summary
Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.17.3, the /api/templates/fetch endpoint accepts a caller-supplied url parameter and performs a server-side HTTP GET request to that URL without authentication and without URL scheme or host validation. The server's response is returned directly to the caller. type. This constitutes an unauthenticated SSRF vulnerability affecting any publicly reachable Arcane instance. This vulnerability is fixed in 1.17.3.
Severity ?
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
getarcaneapp arcane Affected: < 1.17.3
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "arcane",
          "vendor": "getarcaneapp",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.17.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.17.3, the /api/templates/fetch endpoint accepts a caller-supplied url parameter and performs a server-side HTTP GET request to that URL without authentication and without URL scheme or host validation. The server\u0027s response is returned directly to the caller. type. This constitutes an unauthenticated SSRF vulnerability affecting any publicly reachable Arcane instance. This vulnerability is fixed in 1.17.3."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-10T20:34:12.777Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmj"
        },
        {
          "name": "https://github.com/getarcaneapp/arcane/releases/tag/v1.17.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/getarcaneapp/arcane/releases/tag/v1.17.3"
        }
      ],
      "source": {
        "advisory": "GHSA-ff24-4prj-gpmj",
        "discovery": "UNKNOWN"
      },
      "title": "Arcane Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-40242",
    "datePublished": "2026-04-10T20:34:12.777Z",
    "dateReserved": "2026-04-10T17:31:45.785Z",
    "dateUpdated": "2026-04-10T20:34:12.777Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-40242\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-04-10T21:16:27.747\",\"lastModified\":\"2026-04-10T21:16:27.747\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.17.3, the /api/templates/fetch endpoint accepts a caller-supplied url parameter and performs a server-side HTTP GET request to that URL without authentication and without URL scheme or host validation. The server\u0027s response is returned directly to the caller. type. This constitutes an unauthenticated SSRF vulnerability affecting any publicly reachable Arcane instance. This vulnerability is fixed in 1.17.3.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N\",\"baseScore\":7.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":2.7}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-918\"}]}],\"references\":[{\"url\":\"https://github.com/getarcaneapp/arcane/releases/tag/v1.17.3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmj\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}


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