> CVE-2026-71486 [MEDIUM]

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PUBLISHED
2026-08-17 20:16
MODIFIED
2026-08-17 20:16
CVSS_SCORE V3
4.3
EPSS (Prob. Exploit)
0.37%
Top 69.8%
DATA SOURCES:
NVD đź”— 2026-08-17 CWE MITRE đź”— 2026-09-01 FIRST EPSS đź”— 2026-10-25 GITHUB đź”— 2026-10-29 OSV đź”— 2026-08-22

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EXPLOITABILITY
2.8
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
Low
Interruption partielle du service possible

> WEAKNESSES

CWE-400 CWE-770

> CWE DETAILED DESCRIPTIONS

CWE-400: Uncontrolled Resource Consumption - The product does not properly control the allocation and maintenance of a limited resource. | CWE-770: Allocation of Resources Without Limits or Throttling - The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: Red Hat AI Inference Tech Preview 3.5.2 (Gaudi)
Red Hat AI Inference Tech Preview 3.5.2 (Gaudi) is now available.
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (ROCm)
Red Hat AI Inference 3.5.2 (ROCm) is now available.
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (cpu)
Red Hat AI Inference 3.5.2 (cpu) is now available.
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (spyre)
Red Hat AI Inference 3.5.2 (spyre) is now available.
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (cuda)
Red Hat AI Inference 3.5.2 (cuda) is now available.
Red Hat Security Advisory: Red Hat Enterprise Linux AI 3.5.2 enhancement update
Updated Red Hat Enterprise Linux AI 3.5.2 container images are now available.
Red Hat Security Advisory: Red Hat Enterprise Linux AI 3.5.2 enhancement update
Updated Red Hat Enterprise Linux AI 3.5.2 container disk images are now available.

> GITHUB SECURITY ADVISORY

GHSA-8737-qx52-hjff MODERATE

vLLM: Derender endpoints decode caller-supplied GenerateResponse token IDs without output bounds

AFFECTED PACKAGES:
PIP / vllm
< 0.26.0
Fixed in: 0.26.0

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

vLLM: Derender endpoints decode caller-supplied GenerateResponse token IDs without output bounds

AFFECTED PACKAGES:
Unknown / Unknown
98 versions affected
ALIASES:
GHSA-8737-qx52-hjff

> HISTORIQUE DES MODIFICATIONS

Première apparition
17/08/2026 20:16
Source: NVD
đź“Š ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-400: Uncontrolled Resource Consumption - The product does not properly control the allocation and maintenance of a limited resource. | CWE-770: Allocation of Resources Without Limits or Throttling...
Total des modifications: 1 Dernière mise à jour: 1 month ago

> REFERENCES

https://github.com/vllm-project/vllm/commit/8e61b646e2d157f9b93451fa048f9c8530c8...
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
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