← Back to CVE Explorer

CVE-2026-53423

Full vulnerability record from the local CVENow database.

Description

Allocation of Resources Without Limits or Throttling vulnerability in membraneframework membrane_mp4_plugin allows unauthenticated denial-of-service via BEAM atom table exhaustion. The MP4 box header parser converts each 4-byte box name to an atom using String.to_atom/1 without validation. 'Elixir.Membrane.MP4.Container.Header':parse_box_name/1 in lib/membrane_mp4/container/header.ex interns every box name encountered while 'Elixir.Membrane.MP4.Container.Header':parse/1 walks the input. BEAM atoms are never garbage-collected, so each unique attacker-controlled 4-byte name is a permanent allocation. A crafted MP4 of approximately 8 MB containing roughly 1.1 million boxes with distinct non-standard names exhausts the atom table (default ceiling around 1,048,576 atoms), aborting the entire BEAM node and taking down all applications running on it. This issue affects membrane_mp4_plugin from 0.3.0 before 0.36.7.

Severity
MEDIUM
CVSS score
5.9 (v4.0)
Vulnerability status
Deferred
Source identifier
6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Published
2026-06-11 12:16:31.810000
Last modified
2026-10-25 23:10:00.167000
View original CVE JSON 
{
  "id": "CVE-2026-53423",
  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
  "published": "2026-06-11T12:16:31.810",
  "lastModified": "2026-10-25T23:10:00.167",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Allocation of Resources Without Limits or Throttling vulnerability in membraneframework membrane_mp4_plugin allows unauthenticated denial-of-service via BEAM atom table exhaustion.\n\nThe MP4 box header parser converts each 4-byte box name to an atom using String.to_atom/1 without validation. 'Elixir.Membrane.MP4.Container.Header':parse_box_name/1 in lib/membrane_mp4/container/header.ex interns every box name encountered while 'Elixir.Membrane.MP4.Container.Header':parse/1 walks the input. BEAM atoms are never garbage-collected, so each unique attacker-controlled 4-byte name is a permanent allocation. A crafted MP4 of approximately 8 MB containing roughly 1.1 million boxes with distinct non-standard names exhausts the atom table (default ceiling around 1,048,576 atoms), aborting the entire BEAM node and taking down all applications running on it.\n\nThis issue affects membrane_mp4_plugin from 0.3.0 before 0.36.7."
    },
    {
      "lang": "es",
      "value": "vulnerabilidad de asignación de recursos sin límites ni limitación en membraneframework membrane_mp4_plugin permite una denegación de servicio no autenticada mediante el agotamiento de la tabla de átomos de BEAM.\n\nEl analizador de encabezados de cajas MP4 convierte cada nombre de caja de 4 bytes en un átomo usando String.to_atom/1 sin validación. ’Elixir.Membrane.MP4.Container.Header’:parse_box_name/1 en lib/membrane_mp4/container/header.ex interna cada nombre de caja encontrado mientras ’Elixir.Membrane.MP4.Container.Header’:parse/1 recorre la entrada. Los átomos de BEAM nunca son recolectados por el recolector de basura, por lo que cada nombre único de 4 bytes controlado por el atacante es una asignación permanente. Un MP4 manipulado de aproximadamente 8 MB que contiene aproximadamente 1.1 millones de cajas con nombres distintos no estándar agota la tabla de átomos (límite predeterminado de alrededor de 1,048,576 átomos), abortando el nodo BEAM completo y derribando todas las aplicaciones que se ejecutan en él.\n\nEste problema afecta a membrane_mp4_plugin desde 0.3.0 antes de 0.36.7."
    }
  ],
  "affected": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "affectedData": [
        {
          "vendor": "membraneframework",
          "product": "membrane_mp4_plugin",
          "defaultStatus": "unaffected",
          "collectionURL": "https://repo.hex.pm",
          "packageName": "membrane_mp4_plugin",
          "cpes": [
            "cpe:2.3:a:membraneframework:membrane_mp4_plugin:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Elixir.Membrane.MP4.Container.Header"
          ],
          "programFiles": [
            "lib/membrane_mp4/container/header.ex"
          ],
          "programRoutines": [
            {
              "name": "'Elixir.Membrane.MP4.Container.Header':parse/1"
            },
            {
              "name": "'Elixir.Membrane.MP4.Container.Header':parse_box_name/1"
            }
          ],
          "repo": "https://github.com/membraneframework/membrane_mp4_plugin",
          "packageURL": "pkg:hex/membrane_mp4_plugin",
          "versions": [
            {
              "version": "0.3.0",
              "lessThan": "0.36.7",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "membraneframework",
          "product": "membrane_mp4_plugin",
          "defaultStatus": "unaffected",
          "collectionURL": "https://github.com",
          "packageName": "membraneframework/membrane_mp4_plugin",
          "cpes": [
            "cpe:2.3:a:membraneframework:membrane_mp4_plugin:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Elixir.Membrane.MP4.Container.Header"
          ],
          "programFiles": [
            "lib/membrane_mp4/container/header.ex"
          ],
          "programRoutines": [
            {
              "name": "'Elixir.Membrane.MP4.Container.Header':parse/1"
            },
            {
              "name": "'Elixir.Membrane.MP4.Container.Header':parse_box_name/1"
            }
          ],
          "repo": "https://github.com/membraneframework/membrane_mp4_plugin",
          "packageURL": "pkg:github/membraneframework/membrane_mp4_plugin",
          "versions": [
            {
              "version": "ae4bf04c393aa1562f3df3d33e20bc5cb8130de2",
              "lessThan": "56373d1ddc86968e55fbde795c14eeba24357b57",
              "versionType": "git",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "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",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "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"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-11T12:09:51.183359Z",
          "id": "CVE-2026-53423",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://cna.erlef.org/cves/CVE-2026-53423.html",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/membraneframework/membrane_mp4_plugin/commit/56373d1ddc86968e55fbde795c14eeba24357b57",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/membraneframework/membrane_mp4_plugin/security/advisories/GHSA-43hj-fxwj-49qw",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-53423",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/membraneframework/membrane_mp4_plugin/security/advisories/GHSA-43hj-fxwj-49qw",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}