{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109311 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-109311 is a high-severity memory corruption vulnerability in vllm-project vllm, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-109311 and fix it if it is affected.\n\nWhat it is: CVE-2026-109311 is a high-severity memory corruption vulnerability in vllm-project vllm, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109311 exists.\n\nAffected product: vllm-project vllm. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-109311/ (Markdown: https://insights.sbomify.com/CVE-2026-109311/index.md)","id":"CVE-2026-109311","markdown":"https://insights.sbomify.com/CVE-2026-109311/index.md","name":"CVE-2026-109311","record":{"aliases":["GHSA-8wc5-pcgr-pg48","GHSA-m52c-39rh-f3gp","MINI-6g9p-w7v5-v4mq","MINI-q3f2-252w-xjpm","MINI-whh4-v64g-jv53"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"LLM inference server","requires_auth":"low_privilege","summary":"Authenticated attackers can crash the vLLM API process by uploading malformed IAMF audio files, causing a heap overflow in the underlying FFmpeg parser.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"vLLM before 0.29.0 passes uploaded audio to the PyAV/FFmpeg av.open() fallback with only a file-size check, exposing FFmpeg's IAMF parser heap overflow. Authenticated remote attackers can repeatedly upload malformed IAMF containers to /v1/audio/transcriptions, corrupting the heap and crashing the API process.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"vLLM before 0.29.0 Heap Overflow DoS via IAMF Audio Transcription Upload","id":"CVE-2026-109311","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Grav Login Plugin 2.7.0 before 3.9.9 2FA Bypass via Profile Update Form","id":"CVE-2026-109312"},"packages":[],"prev":{"headline":"SiYuan v3.1.12 before v3.8.6 Denial of Service via getDynamicIcon Template","id":"CVE-2026-109310"},"products":["vllm"],"published":"2026-10-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-10-18","vendors":["vllm-project"]},"summary":"Authenticated attackers can crash the vLLM API process by uploading malformed IAMF audio files, causing a heap overflow in the underlying FFmpeg parser.","url":"https://insights.sbomify.com/CVE-2026-109311/"}