CVE-2025-71379 | BDVDB-2026-341846 Detail

Description#

vLLM versions >= 0.6.3 and < 0.9.0 contain multiple regular expression denial of service (ReDoS) vulnerabilities. Several regex patterns — in vllm/lora/utils.py, the phi4mini tool parser, and the OpenAI-compatible serving chat endpoint — are susceptible to catastrophic backtracking. An attacker submitting crafted input with nested or repeated structures can trigger severe CPU consumption and performance degradation, resulting in denial of service.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-06-20Record published in the CVE List.
2. Version 22026-11-08Most recent update recorded in the CVE List.