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AshPhoenix FilterForm allows filtering across non-public relationships, disclosing private related data

Type: advisorySources: OSV

Authorization Bypass Through User-Controlled Key vulnerability in ash-project ash_phoenix lets an attacker who controls filter form parameters filter across relationships the resource author marked non-public, turning the returned rows into a boolean oracle over private related data. AshPhoenix.FilterForm resolved every relationship hop in the user-supplied path with Ash.Resource.Info.related/2, which traverses private relationships, and only checked the terminal field for publicity. parse_path_and_field/2 also rewrote a field naming a relationship into an extra path segment, so field=some_private_rel was accepted too. Both path and field come straight from form params, and the resulting ref went to Ash.Query.do_filter/2 without the public-only enforcement of Ash.Filter.parse_input/2. The fix resolves each hop with Ash.Resource.Info.public_relationship/2, rejecting the first non-public hop, and requires the terminal field to be public. This issue affects ash_phoenix: from 0.6.0-rc.1 before 2.3.25.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-82725
Confirmed fixed CVEs
Not specified
Updated in this feed
6 Nov 2026, 00:07 UTC · Revision 1

Source evidence

AshPhoenix FilterForm allows filtering across non-public relationships, disclosing private related data

core-osv · Original source

Published 31 Aug 2026, 03:09 UTC

Authorization Bypass Through User-Controlled Key vulnerability in ash-project ash_phoenix lets an attacker who controls filter form parameters filter across relationships the resource author marked non-public, turning the returned rows into a boolean oracle over private related data. AshPhoenix.FilterForm resolved every relationship hop in the user-supplied path with Ash.Resource.Info.related/2, which traverses private relationships, and only checked the terminal field for publicity. parse_path_and_field/2 also rewrote a field naming a relationship into an extra path segment, so field=some_private_rel was accepted too. Both path and field come straight from form params, and the resulting ref went to Ash.Query.do_filter/2 without the public-only enforcement of Ash.Filter.parse_input/2. The fix resolves each hop with Ash.Resource.Info.public_relationship/2, rejecting the first non-public hop, and requires the terminal field to be public. This issue affects ash_phoenix: from 0.6.0-rc.1 before 2.3.25.

osv:CVE-2026-82725
Complete source record
{
  "id": "34c69f51385ae3dc79d19d3e51bb501eda7b6487071f2f050f305d5e739c6dd7",
  "url": "https://osv.dev/vulnerability/CVE-2026-82725",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "AshPhoenix FilterForm allows filtering across non-public relationships, disclosing private related data",
    "summary": "Authorization Bypass Through User-Controlled Key vulnerability in ash-project ash_phoenix lets an attacker who controls filter form parameters filter across relationships the resource author marked non-public, turning the returned rows into a boolean oracle over private related data. AshPhoenix.FilterForm resolved every relationship hop in the user-supplied path with Ash.Resource.Info.related/2, which traverses private relationships, and only checked the terminal field for publicity. parse_path_and_field/2 also rewrote a field naming a relationship into an extra path segment, so field=some_private_rel was accepted too. Both path and field come straight from form params, and the resulting ref went to Ash.Query.do_filter/2 without the public-only enforcement of Ash.Filter.parse_input/2. The fix resolves each hop with Ash.Resource.Info.public_relationship/2, rejecting the first non-public hop, and requires the terminal field to be public. This issue affects ash_phoenix: from 0.6.0-rc.1 before 2.3.25.",
    "evidence": "osv:CVE-2026-82725",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-82725",
      "aliases": [
        "CVE-2026-82725",
        "EEF-CVE-2026-82725",
        "GHSA-7xhg-xphm-f458"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ash-project/ash_phoenix",
              "type": "GIT",
              "events": [
                {
                  "introduced": "06875682999938f607c970e71b6a80af90e18b3d"
                },
                {
                  "fixed": "a3691a3cb0947e8f2dc2c3cbff138a3e6197a15b"
                },
                {
                  "introduced": "81ce20f363ad0904b61fcd893e1bb10c5966a87d"
                },
                {
                  "fixed": "1e38e7dc8838426cc94656238d9208759c661c03"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "06875682999938f607c970e71b6a80af90e18b3d"
                      },
                      {
                        "fixed": "a3691a3cb0947e8f2dc2c3cbff138a3e6197a15b"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.6.0-rc.1"
                      },
                      {
                        "fixed": "2.3.25"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a3691a3cb0947e8f2dc2c3cbff138a3e6197a15b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.3.24",
            "v2.3.23",
            "v2.3.22",
            "v2.3.21",
            "v2.3.20",
            "v2.3.19",
            "v2.3.18",
            "v2.3.17",
            "v2.3.10",
            "v2.3.16",
            "v2.3.15",
            "v2.3.14",
            "v2.3.13",
            "v2.3.12",
            "v2.3.11",
            "v2.3.9",
            "v2.3.8",
            "v2.3.7",
            "v2.3.6",
            "v2.3.5",
            "v2.3.4",
            "v2.3.3",
            "v2.3.2",
            "v2.3.1",
            "v2.3.0",
            "v2.2.0",
            "v2.1.26",
            "v2.1.25",
            "v2.1.24",
            "v2.1.23",
            "v2.1.22",
            "v2.1.21",
            "v2.1.20",
            "v2.1.19",
            "v2.1.18",
            "v2.1.17",
            "v2.1.16",
            "v2.1.15",
            "v2.1.14",
            "v2.1.12",
            "v2.1.11",
            "v2.1.10",
            "v2.1.9",
            "v2.1.8",
            "v2.1.7",
            "v2.1.6",
            "v2.1.5",
            "v2.1.4",
            "v2.1.3",
            "v2.1.1",
            "v2.0.3",
            "v2.0.2",
            "v2.0.1",
            "v2.0.0-rc.8",
            "v2.0.0-rc.7",
            "v2.0.0-rc.6",
            "v2.0.0-rc.5",
            "v2.0.0-rc.4",
            "v2.0.0-rc.3",
            "v2.0.0-rc.2",
            "v2.0.0-rc.1",
            "v2.0.0-rc.0",
            "v1.3.4",
            "v1.3.3",
            "v1.3.2",
            "v1.3.1",
            "v1.3.0",
            "v1.2.26",
            "v1.2.25",
            "v1.2.24",
            "v1.2.23",
            "v1.2.22",
            "v1.2.21",
            "v1.2.20",
            "v1.2.19",
            "v1.2.18",
            "v1.2.17",
            "v1.2.16",
            "v1.2.15",
            "v1.2.14",
            "v1.2.13",
            "v1.2.12",
            "v1.2.11",
            "v1.2.10",
            "v1.2.9",
            "v1.2.8",
            "v1.2.7",
            "v1.2.6",
            "v1.2.5",
            "v1.2.4",
            "v1.2.3",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.2",
            "v1.1.1",
            "v1.1.0",
            "v1.1.0-rc.3",
            "v1.1.0-rc.2",
            "v1.1.0-rc.1",
            "v1.1.0-rc.0",
            "v1.0.0-rc.1",
            "v1.0.0-rc.0",
            "v0.7.7",
            "v0.7.6-rc.0",
            "v0.7.5",
            "v0.7.4",
            "v0.7.3",
            "v0.7.2-rc.2",
            "v0.7.2-rc.1",
            "v0.7.2-rc.0",
            "v0.7.1",
            "v0.7.0",
            "v0.6.0-rc.7",
            "v0.6.0-rc.6",
            "v0.6.0-rc.5",
            "v0.6.0-rc.4",
            "v0.6.0-rc.3",
            "v0.6.0-rc.2",
            "v0.6.0-rc.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82725.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.422425199Z",
      "provider": "osv",
      "references": [
        "https://cna.erlef.org/cves/CVE-2026-82725.html",
        "https://github.com",
        "https://osv.dev/vulnerability/EEF-CVE-2026-82725",
        "https://repo.hex.pm",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82725.json",
        "https://github.com/ash-project/ash_phoenix/security/advisories/GHSA-7xhg-xphm-f458",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-82725",
        "https://github.com/ash-project/ash_phoenix/commit/a3691a3cb0947e8f2dc2c3cbff138a3e6197a15b",
        "https://github.com/ash-project/ash_phoenix"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "EEF",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82725.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-82725",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513341,
  "published_at": "2026-08-31T03:09:25.85+00:00"
}