Vulnerability-Lookup

CVE-2026-82745 (GCVE-0-2026-82745)

Vulnerability from cvelistv5 – Published: 2026-09-01 03:42 – Updated: 2026-09-01 15:16

Title

ETS and Mnesia data layers overwrite an existing record on create instead of enforcing primary-key uniqueness

Summary

Improper Access Control vulnerability in ash-project ash lets a create action overwrite an existing record when the ETS or Mnesia data layer is used, because neither enforced primary-key uniqueness on insert. Unlike a SQL data layer, whose unique primary-key constraint rejects a duplicate, the ETS and Mnesia data layers implemented create as a keyed insert that replaces any existing entry with the same primary key (lib/ash/data_layer/ets/ets.ex, lib/ash/data_layer/mnesia/mnesia.ex). An actor who can set the primary key on a create (for example a user-supplied string or integer key) can submit a create whose key matches an existing record and silently overwrite it, destroying and replacing another entity's data without going through the update action or its policies. The fix rejects a create whose primary key already exists with an already-taken error, and only allows duplicates for keyless resources. This issue affects ash: from 0.4.0 before 3.32.2.

Severity

5.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-01 15:16 UTC

CWE

CWE-284 - Improper Access Control

Assigner

EEF mitre root

References

4 references

URL	Tags
https://github.com/ash-project/ash/security/advis…	vendor-advisoryrelated
https://cna.erlef.org/cves/CVE-2026-82745.html	related
https://osv.dev/vulnerability/EEF-CVE-2026-82745	related
https://github.com/ash-project/ash/commit/912e243…	patch

Impacted products

2 products

Vendor	Product	Version	CPE status
ash-project	ash	Affected: 0.4.0 , < 3.32.2 (semver) cpe:2.3:a:ash-project:ash::::::::
ash-project	ash	Affected: 6dc699d8a683d542812b34a8c104cc90164add3a , < 912e243196017c2a812c25905c2b1cc3bbb843fc (git) cpe:2.3:a:ash-project:ash::::::::

Credits

Jonatan Männchen / EEF Peter Ullrich Peter Ullrich Zach Daniel / Ash Project

Show details on NVD website

JSON

To clipboard

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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-82745\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-01T15:16:19.826687Z\"}}}], \"references\": [{\"url\": \"https://github.com/ash-project/ash/security/advisories/GHSA-92x7-q3h5-wf88\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-01T15:16:34.651Z\"}}], \"cna\": {\"title\": \"ETS and Mnesia data layers overwrite an existing record on create instead of enforcing primary-key uniqueness\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"Jonatan M\\u00e4nnchen / EEF\"}, {\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Zach Daniel / Ash Project\"}], \"impacts\": [{\"capecId\": \"CAPEC-1\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 5.9, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/ash-project/ash\", \"vendor\": \"ash-project\", \"modules\": [\"\u0027Elixir.Ash.DataLayer.Ets\u0027\", \"\u0027Elixir.Ash.DataLayer.Mnesia\u0027\"], \"product\": \"ash\", \"versions\": [{\"status\": \"affected\", \"version\": \"0.4.0\", \"lessThan\": \"3.32.2\", \"versionType\": \"semver\"}], \"packageURL\": \"pkg:hex/ash\", \"packageName\": \"ash\", \"programFiles\": [\"lib/ash/data_layer/ets/ets.ex\", \"lib/ash/data_layer/mnesia/mnesia.ex\"], \"collectionURL\": \"https://repo.hex.pm\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"\u0027Elixir.Ash.DataLayer.Ets\u0027:create/2\"}, {\"name\": \"\u0027Elixir.Ash.DataLayer.Mnesia\u0027:create/2\"}]}, {\"cpes\": [\"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/ash-project/ash\", \"vendor\": \"ash-project\", \"modules\": [\"\u0027Elixir.Ash.DataLayer.Ets\u0027\", \"\u0027Elixir.Ash.DataLayer.Mnesia\u0027\"], \"product\": \"ash\", \"versions\": [{\"status\": \"affected\", \"version\": \"6dc699d8a683d542812b34a8c104cc90164add3a\", \"lessThan\": \"912e243196017c2a812c25905c2b1cc3bbb843fc\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/ash-project/ash\", \"packageName\": \"ash-project/ash\", \"programFiles\": [\"lib/ash/data_layer/ets/ets.ex\", \"lib/ash/data_layer/mnesia/mnesia.ex\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"\u0027Elixir.Ash.DataLayer.Ets\u0027:create/2\"}, {\"name\": \"\u0027Elixir.Ash.DataLayer.Mnesia\u0027:create/2\"}]}], \"references\": [{\"url\": \"https://github.com/ash-project/ash/security/advisories/GHSA-92x7-q3h5-wf88\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-82745.html\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-82745\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/ash-project/ash/commit/912e243196017c2a812c25905c2b1cc3bbb843fc\", \"tags\": [\"patch\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Improper Access Control vulnerability in ash-project ash lets a create action overwrite an existing record when the ETS or Mnesia data layer is used, because neither enforced primary-key uniqueness on insert.\\n\\nUnlike a SQL data layer, whose unique primary-key constraint rejects a duplicate, the ETS and Mnesia data layers implemented create as a keyed insert that replaces any existing entry with the same primary key (lib/ash/data_layer/ets/ets.ex, lib/ash/data_layer/mnesia/mnesia.ex). 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An actor who can set the primary key on a create (for example a user-supplied string or integer key) can submit a create whose key matches an existing record and silently overwrite it, destroying and replacing another entity\u0027s data without going through the update action or its policies. The fix rejects a create whose primary key already exists with an already-taken error, and only allows duplicates for keyless resources.\u003c/p\u003e\\n\u003cp\u003eThis issue affects ash: from 0.4.0 before 3.32.2.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"Improper Access Control vulnerability in ash-project ash lets a create action overwrite an existing record when the ETS or Mnesia data layer is used, because neither enforced primary-key uniqueness on insert.\\n\\nUnlike a SQL data layer, whose unique primary-key constraint rejects a duplicate, the ETS and Mnesia data layers implemented `create` as a keyed insert that replaces any existing entry with the same primary key (`lib/ash/data_layer/ets/ets.ex`, `lib/ash/data_layer/mnesia/mnesia.ex`). An actor who can set the primary key on a create (for example a user-supplied string or integer key) can submit a create whose key matches an existing record and silently overwrite it, destroying and replacing another entity\u0027s data without going through the update action or its policies. The fix rejects a create whose primary key already exists with an already-taken error, and only allows duplicates for keyless resources.\\n\\nThis issue affects ash: from 0.4.0 before 3.32.2.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-284\", \"description\": \"CWE-284 Improper Access Control\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"3.32.2\", \"versionStartIncluding\": \"0.4.0\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-09-01T03:42:28.309Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-82745\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-01T15:16:38.003Z\", \"dateReserved\": \"2026-08-31T01:00:09.774Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-09-01T03:42:28.309Z\", \"assignerShortName\": \"EEF\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-82745

Vulnerability from fkie_nvd - Published: 2026-09-01 04:18 - Updated: 2026-09-01 04:18

Severity

5.9 (Medium) - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://cna.erlef.org/cves/CVE-2026-82745.html
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://github.com/ash-project/ash/commit/912e243196017c2a812c25905c2b1cc3bbb843fc
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://github.com/ash-project/ash/security/advisories/GHSA-92x7-q3h5-wf88
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://osv.dev/vulnerability/EEF-CVE-2026-82745

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://repo.hex.pm",
          "cpes": [
            "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Ash.DataLayer.Ets\u0027",
            "\u0027Elixir.Ash.DataLayer.Mnesia\u0027"
          ],
          "packageName": "ash",
          "packageURL": "pkg:hex/ash",
          "product": "ash",
          "programFiles": [
            "lib/ash/data_layer/ets/ets.ex",
            "lib/ash/data_layer/mnesia/mnesia.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.Ash.DataLayer.Ets\u0027:create/2"
            },
            {
              "name": "\u0027Elixir.Ash.DataLayer.Mnesia\u0027:create/2"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "vendor": "ash-project",
          "versions": [
            {
              "lessThan": "3.32.2",
              "status": "affected",
              "version": "0.4.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Ash.DataLayer.Ets\u0027",
            "\u0027Elixir.Ash.DataLayer.Mnesia\u0027"
          ],
          "packageName": "ash-project/ash",
          "packageURL": "pkg:github/ash-project/ash",
          "product": "ash",
          "programFiles": [
            "lib/ash/data_layer/ets/ets.ex",
            "lib/ash/data_layer/mnesia/mnesia.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.Ash.DataLayer.Ets\u0027:create/2"
            },
            {
              "name": "\u0027Elixir.Ash.DataLayer.Mnesia\u0027:create/2"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "vendor": "ash-project",
          "versions": [
            {
              "lessThan": "912e243196017c2a812c25905c2b1cc3bbb843fc",
              "status": "affected",
              "version": "6dc699d8a683d542812b34a8c104cc90164add3a",
              "versionType": "git"
            }
          ]
        }
      ],
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Access Control vulnerability in ash-project ash lets a create action overwrite an existing record when the ETS or Mnesia data layer is used, because neither enforced primary-key uniqueness on insert.\n\nUnlike a SQL data layer, whose unique primary-key constraint rejects a duplicate, the ETS and Mnesia data layers implemented create as a keyed insert that replaces any existing entry with the same primary key (lib/ash/data_layer/ets/ets.ex, lib/ash/data_layer/mnesia/mnesia.ex). An actor who can set the primary key on a create (for example a user-supplied string or integer key) can submit a create whose key matches an existing record and silently overwrite it, destroying and replacing another entity\u0027s data without going through the update action or its policies. The fix rejects a create whose primary key already exists with an already-taken error, and only allows duplicates for keyless resources.\n\nThis issue affects ash: from 0.4.0 before 3.32.2."
    }
  ],
  "id": "CVE-2026-82745",
  "lastModified": "2026-09-01T04:18:04.803",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "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": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-01T04:18:04.803",
  "references": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://cna.erlef.org/cves/CVE-2026-82745.html"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://github.com/ash-project/ash/commit/912e243196017c2a812c25905c2b1cc3bbb843fc"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://github.com/ash-project/ash/security/advisories/GHSA-92x7-q3h5-wf88"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82745"
    }
  ],
  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-82745 (GCVE-0-2026-82745)

FKIE_CVE-2026-82745

Tags

Sightings

Nomenclature