Vulnerability in Vllm-Project Vllm
CVE-2026-103241
A flaw has been found in vllm-project vLLM up to 0.26.0. This vulnerability affects unknown code of the file rust/src/parser/src/unified/gemma4.rs of the component Gemma4UnifiedParser. Executing a manipulation can lead to denial of service. The attack may be launched remotely. The exploit has been published and may be used. Upgrading to version 0.29.1rc0 is able to resolve this issue. This patch is called 3439bad37e68ba9755a46f4f6b44a4aeaf1f60a9. Upgrading the affected component is advised.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Vllm-Project Vllm — versions 0.1, 0.10, 0.11
Weakness classification (CWE)
References
- vuldb.com/vuln/411965 (vdb-entry)
- vuldb.com/vuln/411965/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-103241 (third-party-advisory)
- vuldb.com/submit/956250 (third-party-advisory)
- github.com/vllm-project/vllm/issues/50927 (issue-tracking)
- github.com/vllm-project/vllm/pull/54303 (issue-tracking, patch)
- gist.github.com/Yunzez/8e98d656aa667095b513161eb056d28e (exploit)
- github.com/vllm-project/vllm/commit/3439bad37e68ba9755a46f4f6b44a4aeaf1f60a9 (patch)
- github.com/vllm-project/vllm/releases/tag/v0.29.1rc0 (patch)
- github.com/vllm-project/vllm/ (product)
Frequently asked questions
- What is CVE-2026-103241?
- CVE-2026-103241 is a medium-severity vulnerability in Vllm-Project Vllm, classified under Improper Resource Shutdown or Release. CVSS score: 5.3/10. Published 2026-09-30.
- How severe is CVE-2026-103241?
- Medium severity. CVSS v3 base score is 5.3 out of 10.