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CVE-2026-82757

🗓️ 07 Sep 2026 22:31:34Reported by EEFType 
cve
 cve
🔗 web.nvd.nist.gov👁 29 Views🌐 WEB

SSRF in ash_authentication_oauth2_server 0.3.0; CIMD fetcher treats IPv4-in-IPv6 as public.

Related
Detection
Affected
Refs
Paths
Vulners
CNA
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:ash-project:ash_authentication_oauth2_server:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.AshAuthentication.Oauth2Server.CIMD.ReqFetcher'"
    ],
    "packageName": "ash_authentication_oauth2_server",
    "packageURL": "pkg:hex/ash_authentication_oauth2_server",
    "product": "ash_authentication_oauth2_server",
    "programFiles": [
      "lib/ash_authentication/oauth2_server/cimd/req_fetcher.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.AshAuthentication.Oauth2Server.CIMD.ReqFetcher':public_ip?/1"
      },
      {
        "name": "'Elixir.AshAuthentication.Oauth2Server.CIMD.ReqFetcher':fetch/2"
      }
    ],
    "repo": "https://github.com/ash-project/ash_authentication_oauth2_server",
    "vendor": "ash-project",
    "versions": [
      {
        "lessThan": "0.3.1",
        "status": "affected",
        "version": "0.3.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:ash-project:ash_authentication_oauth2_server:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.AshAuthentication.Oauth2Server.CIMD.ReqFetcher'"
    ],
    "packageName": "ash-project/ash_authentication_oauth2_server",
    "packageURL": "pkg:github/ash-project/ash_authentication_oauth2_server",
    "product": "ash_authentication_oauth2_server",
    "programFiles": [
      "lib/ash_authentication/oauth2_server/cimd/req_fetcher.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.AshAuthentication.Oauth2Server.CIMD.ReqFetcher':public_ip?/1"
      },
      {
        "name": "'Elixir.AshAuthentication.Oauth2Server.CIMD.ReqFetcher':fetch/2"
      }
    ],
    "repo": "https://github.com/ash-project/ash_authentication_oauth2_server",
    "vendor": "ash-project",
    "versions": [
      {
        "lessThan": "268b591261a3473ab9b87272963e4dd2fd99d972",
        "status": "affected",
        "version": "e713a9ba816761140c226e2ca55b75c0b93f5984",
        "versionType": "git"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
public_ippath/public_ip?/1SSRF vulnerability in AshAuthentication.Oauth2Server.CIMD.ReqFetcher where certain IPv6 address ranges (::127.0.0.1, ::ffff:0:0:0/96, and fec0::/10) are incorrectly classified as publicly routable, allowing the server to fetch metadata from internal or loopback addresses.CWE-918

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08 Sep 2026 15:18Current
5.7Medium risk
Vulners AI Score5.7
CVSS 46.3
EPSS0.00665
SSVC
29