{"id":"CVE-2026-53423","summary":"Unauthenticated denial-of-service via BEAM atom table exhaustion in membrane_mp4_plugin","details":"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.","aliases":["EEF-CVE-2026-53423","GHSA-43hj-fxwj-49qw"],"modified":"2026-06-18T03:56:59.218304404Z","published":"2026-06-11T10:44:51.528Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53423.json","cwe_ids":["CWE-770"],"unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"ae4bf04c393aa1562f3df3d33e20bc5cb8130de2"},{"fixed":"56373d1ddc86968e55fbde795c14eeba24357b57"}]}],"cna_assigner":"EEF"},"references":[{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-53423.html"},{"type":"WEB","url":"https://github.com"},{"type":"WEB","url":"https://osv.dev/vulnerability/EEF-CVE-2026-53423"},{"type":"WEB","url":"https://repo.hex.pm"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53423.json"},{"type":"ADVISORY","url":"https://github.com/membraneframework/membrane_mp4_plugin/security/advisories/GHSA-43hj-fxwj-49qw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53423"},{"type":"FIX","url":"https://github.com/membraneframework/membrane_mp4_plugin/commit/56373d1ddc86968e55fbde795c14eeba24357b57"},{"type":"PACKAGE","url":"https://github.com/membraneframework/membrane_mp4_plugin"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/membraneframework/membrane_mp4_plugin","events":[{"introduced":"bb05e2b2ca8755df0aa6a62e0577af47e95ad449"},{"fixed":"56373d1ddc86968e55fbde795c14eeba24357b57"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"0.3.0"},{"fixed":"0.36.7"},{"introduced":"0.3.0"},{"fixed":"0.36.7"}]}}],"versions":["v0.36.6","v0.36.5","v0.36.4","v0.36.3","v0.36.2","v0.36.1","v0.36.0","v0.35.3","v0.35.2","v0.35.1","v0.35.0","v0.34.1","v0.34.2","v0.34.0","v0.33.1","v0.33.0","v0.32.0","v0.31.0","v0.30.2","v0.30.1","v0.30.0","v0.29.1","v0.29.0","v0.28.1","v0.28.0","v0.27.0","v0.26.1","v0.26.0","v0.25.0","v0.24.1","v0.24.0","v0.23.0","v0.22.3","v0.22.2","v0.22.1","v0.22.0","v0.21.0","v0.20.0","v0.19.0","v0.18.1","v0.18.0","v0.17.0","v0.16.2","v0.16.1","v0.16.0","v0.15.0","v0.14.0","v0.13.0","v0.12.1","v0.12.0","v0.11.0","v0.10.0","v0.9.0","v0.8.0","v0.7.0","v0.6.0","v0.5.0","v0.4.0","v0.3.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53423.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}