CVE-2026-9540
vllm-project vllm OpenAI-compatible Serving Path denial of service
- State
- Published
- Severity
- 6.9 Medium
- Published
- May 26, 2026
- Updated
- May 26, 2026
- Reserved
- May 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 5.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 5.0 Medium | AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-404 Denial of Service
Affected Products
| Product | Versions |
|---|---|
vllmvllm-project |
|
References
- VDB-365601 | vllm-project vllm OpenAI-compatible Serving Path denial of servicevdb-entry
- VDB-365601 | CTI Indicators (IOB, IOC, TTP)signaturepermissions-required
- Submit #814645 | vllm-project vllm 0.19.0 Denial of Servicethird-party-advisory
- https://github.com/vllm-project/vllm/issues/37343exploitissue-tracking
- https://github.com/vllm-project/vllm/pull/37594issue-trackingpatch
- https://ingero.io/debugging-vllm-latency-minimax-ollama-mcp/related
- https://github.com/vllm-project/vllm/product
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.