CVE-2026-73557

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Source
https://cve.org/CVERecord?id=CVE-2026-73557
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73557.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73557
Aliases
Downstream
CGA (1)
MINI (2)
Published
2026-08-13T15:00:15Z
Modified
2026-10-21T02:30:18Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
vLLM: Incomplete CVE-2025-62164 remediation can be bypassed by concurrent prompt parts
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-362"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73557.json"
}
References

Affected packages

Git / github.com/vllm-project/vllm

Affected ranges

Type
GIT
Repo
https://github.com/vllm-project/vllm
Events
Introduced
9da56fd18b95ff1b11360e8400f7c41b126d190b
Fixed
ffd46bfab2128bb84146050e98b51a617c6575ab
Fixed
793cf79c89d4049124e756915468ac30318f2e50
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0.21.0"
                },
                {
                    "fixed":  "0.26.0"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "793cf79c89d4049124e756915468ac30318f2e50"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v0.26.0",
            "range":  [
                {
                    "fixed":  "ffd46bfab2128bb84146050e98b51a617c6575ab"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73557.json"