CVE-2026-73557

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-73557
vLLM is an inference and serving engine for large language models. From 0.20.2rc0 until 0.26.0, safe_load_prompt_embeds in vllm/renderers/embed_utils.py uses torch.sparse.check_sparse_tensor_invariants, whose process-global save, enable, and restore state can be raced by concurrent prompt_embeds parts submitted to POST /v1/chat/completions through AsyncMultiModalItemTracker.resolve_items, asyncio.gather, and the default executor, allowing an invalid sparse tensor to reach tensor.to_dense despite the CVE-2025-62164 guard when enable_prompt_embeds is enabled. This issue is fixed in version 0.26.0.

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References
Link Resource
https://github.com/vllm-project/vllm/commit/793cf79c89d4049124e756915468ac30318f2e50 Patch
https://github.com/vllm-project/vllm/pull/48583 Issue Tracking Patch
https://github.com/vllm-project/vllm/releases/tag/v0.26.0 Release Notes
https://github.com/vllm-project/vllm/security/advisories/GHSA-pr7f-p5mw-fc87 Mitigation Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*
History

15 Oct 2026, 20:42

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.3
CPE cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*
First Time Vllm
Vllm vllm
References () https://github.com/vllm-project/vllm/commit/793cf79c89d4049124e756915468ac30318f2e50 - () https://github.com/vllm-project/vllm/commit/793cf79c89d4049124e756915468ac30318f2e50 - Patch
References () https://github.com/vllm-project/vllm/pull/48583 - () https://github.com/vllm-project/vllm/pull/48583 - Issue Tracking, Patch
References () https://github.com/vllm-project/vllm/releases/tag/v0.26.0 - () https://github.com/vllm-project/vllm/releases/tag/v0.26.0 - Release Notes
References () https://github.com/vllm-project/vllm/security/advisories/GHSA-pr7f-p5mw-fc87 - () https://github.com/vllm-project/vllm/security/advisories/GHSA-pr7f-p5mw-fc87 - Mitigation, Vendor Advisory
Information

Published : 2026-08-13 15:20

Updated : 2026-10-15 20:42

NVD link : CVE-2026-73557

Mitre link : CVE-2026-73557

CVE.ORG link : CVE-2026-73557

JSON object : View

Products Affected

vllm

  • vllm
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')