MediumVulnerabilityCVE-2026-115911updated 30 Oct 2026, 15:21 UTC
vLLM: DoS via unbounded chat_template Jinja2 rendering exhausts the renderer thread pool
Fixed in vllm 0.32.0Official, 2 sources
| Severity | MediumCVSS 6.5 of 10 |
|---|---|
| Being exploited? | UnclearNo reports either way yet |
| Fix available? | Yesvllm 0.32.0 · since 28 Oct 2026 |
| How sure is this? | Official, 2 sourcesBacked by an official source |
Are you affected?
| Package / product | Affected versions | Fixed in |
|---|---|---|
| vllm · pip | >= 0.19.0, < 0.32.0 | 0.32.0 |
Timeline
- 26 Oct 2026, 17:17 UTCPublicly disclosed
- 28 Oct 2026, 21:14 UTCReported by GitHub Advisory · GitHub Advisory
- 28 Oct 2026, 21:15 UTCPicked up by Zero Radar
- 30 Oct 2026, 15:21 UTCNVD reported on it · NVD
Sources 2 reports, oldest first
Official vendor, government CERT or advisory database
- CVE-2026-115911NVD · 26 Oct 2026, 17:17 UTC
- vLLM: DoS via unbounded chat_template Jinja2 rendering exhausts the renderer thread poolGitHub Advisory · 28 Oct 2026, 21:14 UTC
Technical details
- ID
- CVE-2026-115911 · GHSA-542m-9234-8gvf
- CVSS
- 6.5 / 10
- EPSS
- 0.3% chance of exploitation within 30 days
- Disclosed
- 26 Oct 2026, 17:17 UTC
- On Zero Radar
- 28 Oct 2026, 21:15 UTC (2 days after disclosure)
- Last change
- 30 Oct 2026, 15:21 UTC
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