CVE-2026-67579

Full vulnerability record from the local CVENow database.

Description

Deserialization of Untrusted Data vulnerability in ash-project ash allows an unauthenticated attacker to inject a filter expression through a forged keyset pagination cursor, resulting in SQL injection or code execution depending on the data layer. Read actions with keyset pagination decode the client-supplied page[:after] or page[:before] cursor in decode_values/2 in lib/ash/page/keyset.ex using non_executable_binary_to_term/2 with [:safe]. That guard blocks new atoms, funs, and ports, but not a struct built from atoms already interned in a running Ash application, so a decoded %Ash.Query.Call{} expression survives and is spliced into the keyset filter as a comparison value in do_filters/4 and evaluated. Because the cursor bypasses the Ash.Expr macro, the runtime never applies the private?/public? gate that would otherwise reject it. On AshPostgres the injected fragment is inlined into the SQL query; on the ETS and Simple data layers it is evaluated in-process as an arbitrary function call. This issue affects ash: from 1.17.0 before 3.31.3.

Severity

HIGH

CVSS score

7.5 (v4.0)

Vulnerability status

Analyzed

Source identifier

6b3ad84c-e1a6-4bf7-a703-f496b71e49db

Published

2026-08-12 20:17:48.440000

Last modified

2026-10-24 16:10:00.153000

View original CVE JSON

{
  "id": "CVE-2026-67579",
  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
  "published": "2026-08-12T20:17:48.440",
  "lastModified": "2026-10-24T16:10:00.153",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Deserialization of Untrusted Data vulnerability in ash-project ash allows an unauthenticated attacker to inject a filter expression through a forged keyset pagination cursor, resulting in SQL injection or code execution depending on the data layer.\n\nRead actions with keyset pagination decode the client-supplied page[:after] or page[:before] cursor in decode_values/2 in lib/ash/page/keyset.ex using non_executable_binary_to_term/2 with [:safe]. That guard blocks new atoms, funs, and ports, but not a struct built from atoms already interned in a running Ash application, so a decoded %Ash.Query.Call{} expression survives and is spliced into the keyset filter as a comparison value in do_filters/4 and evaluated. Because the cursor bypasses the Ash.Expr macro, the runtime never applies the private?/public? gate that would otherwise reject it. On AshPostgres the injected fragment is inlined into the SQL query; on the ETS and Simple data layers it is evaluated in-process as an arbitrary function call.\n\nThis issue affects ash: from 1.17.0 before 3.31.3."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de deserialización de datos no confiables en ash-project ash permite a un atacante no autenticado inyectar una expresión de filtro a través de un cursor de paginación de conjunto de claves falsificado, resultando en inyección SQL o ejecución de código dependiendo de la capa de datos.\n\nLas acciones de lectura con paginación de conjunto de claves decodifican el cursor page[:after] o page[:before] suministrado por el cliente en decode_values/2 en lib/ash/page/keyset.ex usando non_executable_binary_to_term/2 con [:safe]. Esa protección bloquea nuevos átomos, funciones y puertos, pero no una estructura construida a partir de átomos ya internados en una aplicación Ash en ejecución, por lo que una expresión %Ash.Query.Call{} decodificada sobrevive y se inserta en el filtro del conjunto de claves como un valor de comparación en do_filters/4 y se evalúa. Debido a que el cursor omite la macro Ash.Expr, el tiempo de ejecución nunca aplica la puerta private?/public? que de otro modo lo rechazaría. En AshPostgres, el fragmento inyectado se inserta en la consulta SQL; en las capas de datos ETS y Simple se evalúa en el proceso como una llamada a función arbitraria.\n\nEste problema afecta a ash: desde 1.17.0 antes de 3.31.3."
    }
  ],
  "affected": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "affectedData": [
        {
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          "product": "ash",
          "defaultStatus": "unaffected",
          "collectionURL": "https://repo.hex.pm",
          "packageName": "ash",
          "cpes": [
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          ],
          "modules": [
            "'Elixir.Ash.Page.Keyset'"
          ],
          "programFiles": [
            "lib/ash/page/keyset.ex"
          ],
          "programRoutines": [
            {
              "name": "'Elixir.Ash.Page.Keyset':decode_values/2"
            },
            {
              "name": "'Elixir.Ash.Page.Keyset':do_filters/4"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "packageURL": "pkg:hex/ash",
          "versions": [
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              "version": "1.17.0",
              "lessThan": "3.31.3",
              "versionType": "semver",
              "status": "affected"
            }
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        },
        {
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          "product": "ash",
          "defaultStatus": "unaffected",
          "collectionURL": "https://github.com",
          "packageName": "ash-project/ash",
          "cpes": [
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          "modules": [
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          "programFiles": [
            "lib/ash/page/keyset.ex"
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          "programRoutines": [
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              "name": "'Elixir.Ash.Page.Keyset':decode_values/2"
            },
            {
              "name": "'Elixir.Ash.Page.Keyset':do_filters/4"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "packageURL": "pkg:github/ash-project/ash",
          "versions": [
            {
              "version": "f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9",
              "lessThan": "91874dd5435bc0ffebd8a254acfa573b39b74520",
              "versionType": "git",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
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          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
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    "cvssMetricV31": [
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          "scope": "UNCHANGED",
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "id": "CVE-2026-67579",
          "options": [
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              "exploitation": "poc"
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          "role": "CISA Coordinator",
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  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-89"
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        {
          "lang": "en",
          "value": "CWE-502"
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  "configurations": [
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              "matchCriteriaId": "C8034378-F7C0-442B-8171-648447A08BD8"
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  ],
  "references": [
    {
      "url": "https://cna.erlef.org/cves/CVE-2026-67579.html",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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}