Is CVE-2026-114049 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-114049?

CVE-2026-114049 has a CVSS v3 severity of LOW (3.7).

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CVE-2026-114049

Description

vLLM before 0.31.0 contains a cross-request mask leak in InputBatch.condense() that allows remote attackers to constrain other clients' outputs by leaving stale allowed_token_ids rows. Attackers can submit concurrent constrained generate requests, including via unauthenticated /invocations, so recycled batch slots apply their token allowlist to victims' unrestricted requests.