8.7
High
CVE-2026-94626 vLLM through 0.29.0 fails to validate the tp_size parameter in kv_transfer_params on OpenAI-compatible completion…
Description
vLLM through 0.29.0 fails to validate the tp_size parameter in kv_transfer_params on OpenAI-compatible completion endpoints, allowing attackers to allocate unbounded memory. Attackers can supply arbitrary tp_size values in prefill/decode disaggregated deployments to exhaust memory and trigger kernel OOM-kill of the decode worker process.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| vllm 0.29 | earliest → 0.29.0 | No fix stated |
References
- Pull Request #51137 github.com
- github.com github.com
- github.com github.com
- github.com github.com
- VulnCheck Advisory: vLLM through 0.29.0 Memory Exhaustion via Unvalidated NIXL tp_size www.vulncheck.com
Timeline
- Published
- Last modified
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