CVE-2026-103241
vllm-project vLLM Gemma4UnifiedParser gemma4.rs denial of service
Description
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.
INFO
Published Date :
Sept. 30, 2026, 5:16 p.m.
Last Modified :
Oct. 6, 2026, 5:14 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Upgrade vLLM to version 0.29.1rc0.
- Update the affected component.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-103241.
| URL | Resource |
|---|---|
| https://gist.github.com/Yunzez/8e98d656aa667095b513161eb056d28e | Product |
| https://github.com/vllm-project/vllm/ | Product |
| https://github.com/vllm-project/vllm/commit/3439bad37e68ba9755a46f4f6b44a4aeaf1f60a9 | Patch |
| https://github.com/vllm-project/vllm/issues/50927 | Issue Tracking Patch |
| https://github.com/vllm-project/vllm/pull/54303 | Issue Tracking Patch |
| https://github.com/vllm-project/vllm/releases/tag/v0.29.1rc0 | Release Notes |
| https://vuldb.com/cve/CVE-2026-103241 | Third Party Advisory VDB Entry |
| https://vuldb.com/submit/956250 | Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/411965 | Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/411965/cti | Permissions Required VDB Entry |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-103241 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-103241
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-103241 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-103241 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* versions up to (including) 0.26.0 Added Reference Type VulDB: https://gist.github.com/Yunzez/8e98d656aa667095b513161eb056d28e Types: Product Added Reference Type VulDB: https://github.com/vllm-project/vllm/ Types: Product Added Reference Type VulDB: https://github.com/vllm-project/vllm/commit/3439bad37e68ba9755a46f4f6b44a4aeaf1f60a9 Types: Patch Added Reference Type VulDB: https://github.com/vllm-project/vllm/issues/50927 Types: Issue Tracking, Patch Added Reference Type VulDB: https://github.com/vllm-project/vllm/pull/54303 Types: Issue Tracking, Patch Added Reference Type VulDB: https://github.com/vllm-project/vllm/releases/tag/v0.29.1rc0 Types: Release Notes Added Reference Type VulDB: https://vuldb.com/cve/CVE-2026-103241 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/submit/956250 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/411965 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/411965/cti Types: Permissions Required, VDB Entry -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 02, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-103241', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-02T16:23:38.542254Z'} -
New CVE Received by [email protected]
Sep. 30, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CWE CWE-404 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/103xxx/CVE-2026-103241.json">CVE-2026-103241</a> Added Reference https://gist.github.com/Yunzez/8e98d656aa667095b513161eb056d28e Added Reference https://github.com/vllm-project/vllm/ Added Reference https://github.com/vllm-project/vllm/commit/3439bad37e68ba9755a46f4f6b44a4aeaf1f60a9 Added Reference https://github.com/vllm-project/vllm/issues/50927 Added Reference https://github.com/vllm-project/vllm/pull/54303 Added Reference https://github.com/vllm-project/vllm/releases/tag/v0.29.1rc0 Added Reference https://vuldb.com/cve/CVE-2026-103241 Added Reference https://vuldb.com/submit/956250 Added Reference https://vuldb.com/vuln/411965 Added Reference https://vuldb.com/vuln/411965/cti