CVEvulnerability
CVE-2026-73558
5.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-08-13
- Last modified
- 2026-09-28
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-190
Description
vLLM is an inference and serving engine for large language models. Prior to 0.27.0, an integer overflow in blockIdx.x * 2 * d in activation_kernels.cu can cause act_and_mul_kernel to consume another batched user's input, allowing a request processed in the same inference batch to receive a partial or complete copy of another user's inference result. This issue is fixed in version 0.27.0.
Affected configurations
• vllm vllm (< 0.27.0)
Related
Weakness · CWE (1)
- CWE-190 Integer Overflow or Wraparound weakness
References
- https://github.com/vllm-project/vllm/commit/451227cb3ff07989698fed982c2d3e4300257924 Patch
- https://github.com/vllm-project/vllm/issues/42860 Issue Tracking, Patch
- https://github.com/vllm-project/vllm/pull/49660 Issue Tracking, Patch
- https://github.com/vllm-project/vllm/releases/tag/v0.27.0 Release Notes
- https://github.com/vllm-project/vllm/security/advisories/GHSA-7m6h-x95x-82q5 Exploit, Vendor Advisory
- https://github.com/vllm-project/vllm/security/advisories/GHSA-7m6h-x95x-82q5 Exploit, Vendor Advisory