CVE catalog
CVE-2026-71486
vLLM is an inference and serving engine for large language models. Prior to 0.26.0, the /v1/completions/derender and /v1/chat/completions/derender endpoints accept caller-supplied GenerateResponse obj
- Severity
- Medium · CVSS 4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.37% · Oct 25, 2026
vLLM is an inference and serving engine for large language models. Prior to 0.26.0, the /v1/completions/derender and /v1/chat/completions/derender endpoints accept caller-supplied GenerateResponse objects whose generate_responses, choices, token_ids, prompt_logprobs, logprobs.content, top_logprobs, and routed_experts structures are processed by OnlineDerenderer and tokenizer.decode before max_model_len, max_tokens, max_num_seqs, or response-size limits are enforced, allowing an authenticated API client to consume excessive CPU and memory and produce oversized responses. This issue is fixed in version 0.26.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Pip | vllm | Not reported | 0.26.0 | fixed |
| Cpe | vllm | Not reported | 0.26.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Pip | vllm | pip | Not reported | 0.26.0 | Not reported | GHSA-8737-QX52-HJFF | Not reported |
| Cpe | vllm | cpe | Not reported | 0.26.0 | Not reported | NVD-CVE-2026-71486 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/advisories/GHSA-8737-qx52-hjff]
- [https://github.com/vllm-project/vllm/commit/8e61b646e2d157f9b93451fa048f9c8530c8a67b]
- [https://github.com/vllm-project/vllm/pull/47260]
- [https://github.com/vllm-project/vllm/releases/tag/v0.26.0]
- [https://github.com/vllm-project/vllm/security/advisories/GHSA-8737-qx52-hjff]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-71486]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-71486.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2879.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]