CVE-2026-114049: vLLM before 0.31.0 Stale allowed_token_ids Mask via InputBatch.condense
vllm-project · vllm
Fixed in 0.31.0 · Affected: vllm-project before 0.31.0 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 18% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- vllm-project · vllmbefore 0.31.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- vllm-project
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-114049 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.