What’s Vulnerable › Vulnerabilities

CVE-2026-9540: vllm-project vllm OpenAI-compatible Serving Path denial of service

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-26 · updated 2026-07-23
• Weakness: CWE-404

Description

A vulnerability was identified in vllm-project vllm 0.19.0. This issue affects some unknown processing of the component OpenAI-compatible Serving Path. Such manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.

Affected products

• vllm-project vllm: 0.19.0

References

• https://github.com/vllm-project/vllm/
• https://github.com/vllm-project/vllm/issues/37343
• https://github.com/vllm-project/vllm/pull/37594
• https://ingero.io/debugging-vllm-latency-minimax-ollama-mcp/
• https://vuldb.com/submit/814645
• https://vuldb.com/vuln/365601
• https://vuldb.com/vuln/365601/cti

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