{"answers":{"affected":"3 open source packages ship an affected version, including membrane_mp4_plugin.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53423 exists.","fix":"Upgrade membrane_mp4_plugin to 0.36.7 or later.","what":"CVE-2026-53423 is a medium-severity denial of service vulnerability in membraneframework membrane_mp4_plugin, published on 11 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-53423 and fix it if it is affected.\n\nWhat it is: CVE-2026-53423 is a medium-severity denial of service vulnerability in membraneframework membrane_mp4_plugin, published on 11 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53423 exists.\n\nAffected packages and fixed versions:\n- membrane_mp4_plugin (Hex): affected all versions; fixed in 0.36.7\n- membrane_mp4_plugin (Hex): affected all versions; fixed in 0.36.7\n- membrane_mp4_plugin (Hex): affected from 0.3.0; fixed in 0.36.7\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-53423/ (Markdown: https://insights.sbomify.com/CVE-2026-53423/index.md)","id":"CVE-2026-53423","markdown":"https://insights.sbomify.com/CVE-2026-53423/index.md","name":"CVE-2026-53423","record":{"aliases":["EEF-CVE-2026-53423","GHSA-43hj-fxwj-49qw"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Elixir MP4 plugin","requires_auth":"none","summary":"Unauthenticated attackers can crash the BEAM node by exhausting the atom table via crafted MP4 files in the membrane_mp4_plugin library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"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.","ecosystems":["Hex"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Unauthenticated denial-of-service via BEAM atom table exhaustion in membrane_mp4_plugin","id":"CVE-2026-53423","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Hex","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Missing one-time-use enforcement in Samly allows replay of SAML bearer assertions","id":"CVE-2026-53424"},"packages":[{"ecosystem":"Hex","fixed":["0.36.7"],"introduced":["0"],"last_affected":[],"package":"membrane_mp4_plugin","purl":null,"source":"GHSA-43hj-fxwj-49qw"},{"ecosystem":"Hex","fixed":["0.36.7"],"introduced":["0"],"last_affected":[],"package":"membrane_mp4_plugin","purl":"pkg:hex/membrane_mp4_plugin","source":"GHSA-43hj-fxwj-49qw"},{"ecosystem":"Hex","fixed":["0.36.7"],"introduced":["0.3.0"],"last_affected":[],"package":"membrane_mp4_plugin","purl":"pkg:hex/membrane_mp4_plugin","source":"EEF-CVE-2026-53423"}],"prev":{"headline":"SFTP REALPATH path-existence oracle allowing filesystem enumeration outside configured root","id":"CVE-2026-53422"},"products":["membrane_mp4_plugin"],"published":"2026-06-11","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Erlang Ecosystem Foundation","prefix":"EEF"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-12","vendors":["membraneframework"]},"summary":"Unauthenticated attackers can crash the BEAM node by exhausting the atom table via crafted MP4 files in the membrane_mp4_plugin library.","url":"https://insights.sbomify.com/CVE-2026-53423/"}