{"answers":{"affected":"3 open source packages ship an affected version, including vllm. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-115911 in the wild and no public exploit code.","fix":"Upgrade vllm to 0.32.0 or later.","what":"CVE-2026-115911 is a medium-severity vulnerability in Vllm Vllm, published on 26 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-115911 and fix it if it is affected.\n\nWhat it is: CVE-2026-115911 is a medium-severity vulnerability in Vllm Vllm, published on 26 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-115911 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- vllm (PyPI): affected from 0.19.0; fixed in 0.32.0\n- vllm (PyPI): affected from 0.19.0; fixed in 0.32.0\n- vllm (PyPI): affected from 0.19.0; fixed in 0.32.0\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-2026-115911/ (Markdown: https://insights.sbomify.com/CVE-2026-115911/index.md)","id":"CVE-2026-115911","markdown":"https://insights.sbomify.com/CVE-2026-115911/index.md","name":"CVE-2026-115911","record":{"aliases":["GHSA-542m-9234-8gvf","PYSEC-2026-4344"],"analysis":null,"analysis_generated_by":null,"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-834","name":"Excessive Iteration"},{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"vLLM is an inference and serving engine for large language models. From 0.19.0 until 0.32.0, authenticated callers can supply a request chat template when no server-side --chat-template is configured, or a malicious model repository can provide a template that is compiled and rendered by tokenizer.apply_chat_template() without a wall-clock timeout, output-size limit, or iteration bound. Rendering runs in a ThreadPoolExecutor with one worker by default, so a nonterminating render can block /v1/responses and other chat-template users after the request ends, while an output-expanding render can exhaust server memory. Harmony models are not affected because they do not use this Jinja path. This issue is fixed in version 0.32.0.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"vLLM: DoS via unbounded chat_template Jinja2 rendering exhausts the renderer thread pool","id":"CVE-2026-115911","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"vllm:vllm","products":["vllm:vllm"],"type":null,"year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"vLLM: Public multimodal SHM handle forgery reaches worker-side `pickle.loads()` with insecure serialization disabled","id":"CVE-2026-115912"},"packages":[{"ecosystem":"PyPI","fixed":["0.32.0"],"introduced":["0.19.0"],"last_affected":[],"package":"vllm","purl":null,"source":"GHSA-542m-9234-8gvf"},{"ecosystem":"PyPI","fixed":["0.32.0"],"introduced":["0.19.0"],"last_affected":[],"package":"vllm","purl":"pkg:pypi/vllm","source":"GHSA-542m-9234-8gvf"},{"ecosystem":"PyPI","fixed":["0.32.0"],"introduced":["0.19.0"],"last_affected":[],"package":"vllm","purl":"pkg:pypi/vllm","source":"PYSEC-2026-4344"}],"prev":{"headline":"Python Social Auth: OpenID Connect nonce is not bound to the browser session, so a stolen authorization code logs the attacker in as the victim","id":"CVE-2026-115910"},"products":["vllm"],"published":"2026-10-26","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-26","vendors":["vllm-project"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-115911/"}