{"id":"CVE-2026-53423","state":"PUBLISHED","title":"Unauthenticated denial-of-service via BEAM atom table exhaustion in membrane_mp4_plugin","description":"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.","publishedAt":"2026-06-11T10:44:51.528Z","updatedAt":"2026-06-12T04:45:33.275Z","severity":{"score":5.9,"label":"Medium","version":"4.0","vector":"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","source":"EEF"},"assigner":"EEF","products":["membraneframework membrane_mp4_plugin"],"affected":[{"vendor":"membraneframework","product":"membrane_mp4_plugin","packageName":"membrane_mp4_plugin","packageURL":"pkg:hex/membrane_mp4_plugin","defaultStatus":"unaffected","versions":[{"version":"0.3.0","status":"affected","lessThan":"0.36.7","versionType":"semver"}],"collectionURL":"https://repo.hex.pm","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"},{"vendor":"membraneframework","product":"membrane_mp4_plugin","packageName":"membraneframework/membrane_mp4_plugin","packageURL":"pkg:github/membraneframework/membrane_mp4_plugin","defaultStatus":"unaffected","versions":[{"version":"ae4bf04c393aa1562f3df3d33e20bc5cb8130de2","status":"affected","lessThan":"56373d1ddc86968e55fbde795c14eeba24357b57","versionType":"git"}],"collectionURL":"https://github.com","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"}],"references":["https://github.com/membraneframework/membrane_mp4_plugin/security/advisories/GHSA-43hj-fxwj-49qw","https://cna.erlef.org/cves/CVE-2026-53423.html","https://osv.dev/vulnerability/EEF-CVE-2026-53423","https://github.com/membraneframework/membrane_mp4_plugin/commit/56373d1ddc86968e55fbde795c14eeba24357b57"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53423.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53423","state":"PUBLISHED","datePublished":"2026-06-11T10:44:51.528Z","dateUpdated":"2026-06-12T04:45:33.275Z","assignerShortName":"EEF","assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","dateReserved":"2026-06-09T11:01:47.529Z"},"containers":{"cna":{"title":"Unauthenticated denial-of-service via BEAM atom table exhaustion in membrane_mp4_plugin","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."}],"affected":[{"vendor":"membraneframework","product":"membrane_mp4_plugin","packageName":"membrane_mp4_plugin","packageURL":"pkg:hex/membrane_mp4_plugin","defaultStatus":"unaffected","versions":[{"version":"0.3.0","status":"affected","lessThan":"0.36.7","versionType":"semver"}],"collectionURL":"https://repo.hex.pm","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"},{"vendor":"membraneframework","product":"membrane_mp4_plugin","packageName":"membraneframework/membrane_mp4_plugin","packageURL":"pkg:github/membraneframework/membrane_mp4_plugin","defaultStatus":"unaffected","versions":[{"version":"ae4bf04c393aa1562f3df3d33e20bc5cb8130de2","status":"affected","lessThan":"56373d1ddc86968e55fbde795c14eeba24357b57","versionType":"git"}],"collectionURL":"https://github.com","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"}],"references":[{"url":"https://github.com/membraneframework/membrane_mp4_plugin/security/advisories/GHSA-43hj-fxwj-49qw","tags":["vendor-advisory","related"]},{"url":"https://cna.erlef.org/cves/CVE-2026-53423.html","tags":["related"]},{"url":"https://osv.dev/vulnerability/EEF-CVE-2026-53423","tags":["related"]},{"url":"https://github.com/membraneframework/membrane_mp4_plugin/commit/56373d1ddc86968e55fbde795c14eeba24357b57","tags":["patch"]}],"metrics":[{"cvssV4_0":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"EEF","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","dateUpdated":"2026-06-12T04:45:33.275Z"},"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:membraneframework:membrane_mp4_plugin:*:*:*:*:*:*:*:*","versionEndExcluding":"0.36.7","versionStartIncluding":"0.3.0","vulnerable":true}],"operator":"OR"}]}],"credits":[{"lang":"en","type":"finder","value":"Łukasz Kita"},{"lang":"en","type":"remediation developer","value":"Łukasz Kita"},{"lang":"en","type":"remediation developer","value":"Mateusz Front"},{"lang":"en","type":"analyst","value":"Jonatan Männchen / EEF"}],"impacts":[{"capecId":"CAPEC-130","descriptions":[{"lang":"en","value":"CAPEC-130 Excessive Allocation"}]}],"source":{"discovery":"INTERNAL"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/membraneframework/membrane_mp4_plugin/security/advisories/GHSA-43hj-fxwj-49qw","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-11T12:09:51.183359Z","id":"CVE-2026-53423","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-11T12:11:18.865Z"}}]}}}