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
Published
2026-08-13T15:00:15Z
Modified
2026-09-11T03:30:19Z
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
e6ff3e9c83a6520c3793f4e0511ac8591a07c243
Fixed
793cf79c89d4049124e756915468ac30318f2e50
Fixed
ffd46bfab2128bb84146050e98b51a617c6575ab
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0.20.2rc0"
        },
        {
            "fixed": "0.26.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.20.2rc0
v0.21.1rc0
v0.22.1rc0
v0.23.1rc0
v0.25.0
v0.26.0rc1

Database specific

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