{"answers":{"affected":"3 open source packages ship an affected version, including vllm. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73559 exists.","fix":"Upgrade vllm to 0.26.0 or later.","what":"CVE-2026-73559 is a medium-severity denial of service vulnerability in Vllm Vllm, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-73559 and fix it if it is affected.\n\nWhat it is: CVE-2026-73559 is a medium-severity denial of service vulnerability in Vllm Vllm, published on 13 Aug 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-2026-73559 exists.\n\nAffected packages and fixed versions:\n- vllm (PyPI): affected from 0.19.0; fixed in 0.26.0\n- vllm (PyPI): affected from 0.19.0; fixed in 0.26.0\n- vllm (PyPI): affected from 0.19.0; fixed in 0.26.0\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-2026-73559/ (Markdown: https://insights.sbomify.com/CVE-2026-73559/index.md)","id":"CVE-2026-73559","markdown":"https://insights.sbomify.com/CVE-2026-73559/index.md","name":"CVE-2026-73559","record":{"aliases":["GHSA-87x5-vmc3-756j","MINI-669x-hpx7-64m9","MINI-68hr-m52v-8fr2","MINI-vh25-68rj-6x85","PYSEC-2026-3704"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"LLM inference engine","requires_auth":"low_privilege","summary":"An authenticated user can cause resource exhaustion and denial of service by submitting a completion request with an unbounded list of prompts.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"vllm","vendor":"vllm"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"vLLM is an inference and serving engine for large language models. From 0.19.0 until 0.26.0, the /v1/completions CompletionRequest.prompt field in vllm/entrypoints/openai/completion/protocol.py accepts an unbounded list[str] or list[list[int]], prompt_to_seq() in vllm/renderers/inputs/preprocess.py and OnlineRenderer.preprocess_completion() in vllm/renderers/online_renderer.py expand every element, and vllm/entrypoints/openai/completion/serving.py creates one engine generator and response slot per prompt, allowing an authenticated API client to exhaust CPU, memory, async scheduling capacity, engine request slots, and response buffering with one request. This issue is fixed in version 0.26.0.","ecosystems":["PyPI"],"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: Completion prompt lists fan out into unbounded engine requests","id":"CVE-2026-73559","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"vllm:vllm","products":["vllm:vllm"],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"vLLM: SSRF + arbitrary local file read in MiMoV2OmniMultiModalProcessor `_fetch_image` and audio loader bypass MediaConnector protections","id":"CVE-2026-73560"},"packages":[{"ecosystem":"PyPI","fixed":["0.26.0"],"introduced":["0.19.0"],"last_affected":[],"package":"vllm","purl":null,"source":"GHSA-87x5-vmc3-756j"},{"ecosystem":"PyPI","fixed":["0.26.0"],"introduced":["0.19.0"],"last_affected":[],"package":"vllm","purl":"pkg:pypi/vllm","source":"GHSA-87x5-vmc3-756j"},{"ecosystem":"PyPI","fixed":["0.26.0"],"introduced":["0.19.0"],"last_affected":[],"package":"vllm","purl":"pkg:pypi/vllm","source":"PYSEC-2026-3704"}],"prev":{"headline":"vLLM: Cross-User Data Leak Vulnerability","id":"CVE-2026-73558"},"products":["vllm"],"published":"2026-08-13","related":[{"cvss_score":10,"headline":"vLLM Vulnerable to Remote Code Execution via Mooncake Integration","id":"CVE-2025-32444","kev_date_added":null,"published":"2025-04-30"},{"cvss_score":9.8,"headline":"vLLM leaks a heap address when PIL throws an error","id":"CVE-2026-22778","kev_date_added":null,"published":"2026-02-02"},{"cvss_score":9.8,"headline":"vLLM Allows Remote Code Execution via PyNcclPipe Communication Service","id":"CVE-2025-47277","kev_date_added":null,"published":"2025-05-20"},{"cvss_score":9.8,"headline":"Remote Code Execution in vllm-project/vllm","id":"CVE-2024-11041","kev_date_added":null,"published":"2025-03-20"},{"cvss_score":9.1,"headline":"vLLM: OpenAI auth bypass","id":"CVE-2026-48746","kev_date_added":null,"published":"2026-06-22"},{"cvss_score":9.1,"headline":"vLLM Allows Remote Code Execution via Mooncake Integration","id":"CVE-2025-29783","kev_date_added":null,"published":"2025-03-19"},{"cvss_score":8.8,"headline":"vLLM 0.9.2 before 0.24.0 SSRF via X-Request-Id in P2pNcclConnector","id":"CVE-2026-116176","kev_date_added":null,"published":"2026-10-25"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"2026-08-14","vendors":["vllm-project"]},"summary":"An authenticated user can cause resource exhaustion and denial of service by submitting a completion request with an unbounded list of prompts.","url":"https://insights.sbomify.com/CVE-2026-73559/"}