PT-2025-18217 · Vllm · Vllm
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
vLLM versions 0.8.0 through 0.8.4
Description
The issue concerns a critical performance vulnerability in the input preprocessing logic of the multimodal tokenizer. It is caused by inefficient list concatenation operations, resulting in quadratic time complexity (O(n²)), which allows malicious actors to trigger resource exhaustion via specially crafted inputs.
Recommendations
For versions 0.8.0 through 0.8.4, update to version 0.8.5 to resolve the issue. As a temporary workaround, consider restricting the use of the multimodal tokenizer to minimize the risk of exploitation.
Exploit
Fix
DoS
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Weakness Enumeration
Related Identifiers
Affected Products
Vllm