CVE-2026-34755

vLLM is an inference and serving engine for large language models (LLMs). From 0.7.0 to before 0.19.0, the VideoMediaIO.load_base64() method at vllm/multimodal/media/video.py splits video/jpeg data URLs by comma to extract individual JPEG frames, but does not enforce a frame count limit. The num_frames parameter (default: 32), which is enforced by the load_bytes() code path, is completely bypassed in the video/jpeg base64 path. An attacker can send a single API request containing thousands of comma-separated base64-encoded JPEG frames, causing the server to decode all frames into memory and crash with OOM. This vulnerability is fixed in 0.19.0.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/vllm-project/vllm/security/advisories/GHSA-pq5c-rjhq-qp7p	Patch Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:36005
https://access.redhat.com/errata/RHSA-2026:36006
https://access.redhat.com/errata/RHSA-2026:57380
https://access.redhat.com/errata/RHSA-2026:57387
https://access.redhat.com/errata/RHSA-2026:57389
https://access.redhat.com/errata/RHSA-2026:57390
https://access.redhat.com/errata/RHSA-2026:59144
https://access.redhat.com/errata/RHSA-2026:59151
https://access.redhat.com/security/cve/CVE-2026-34755
https://bugzilla.redhat.com/show_bug.cgi?id=2455403
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34755.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-06 16:16

Updated : 2026-08-25 13:18

NVD link : CVE-2026-34755

Mitre link : CVE-2026-34755

CVE.ORG link : CVE-2026-34755

JSON object : View

Products Affected

vllm

vllm

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

{"id": "CVE-2026-34755", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34755", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-06T18:36:13.854345Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "vllm-project", "product": "vllm", "versions": [{"status": "affected", "version": ">= 0.7.0, < 0.19.0"}]}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/a:redhat:ai_inference_server:3.2::el9"], "vendor": "Red Hat", "product": "Red Hat AI Inference Server 3.2", "versions": [{"status": "unaffected", "version": "1782951012", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhaiis/vllm-cuda-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ai_inference_server:3.2::el9"], "vendor": "Red Hat", "product": "Red Hat AI Inference Server 3.2", "versions": [{"status": "unaffected", "version": "1782951244", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhaiis/vllm-rocm-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ai_inference_server:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat AI Inference Server 3.4", "versions": [{"status": "unaffected", "version": "1787151769", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhaii/vllm-cpu-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ai_inference_server:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat AI Inference Server 3.4", "versions": [{"status": "unaffected", "version": "1787151840", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhaii/vllm-spyre-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ai_inference_server:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat AI Inference Server 3.4", "versions": [{"status": "unaffected", "version": "1787151771", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhaii/vllm-cuda-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ai_inference_server:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat AI Inference Server 3.4", "versions": [{"status": "unaffected", "version": "1787151774", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhaii/vllm-rocm-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux_ai:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux AI 3.4", "versions": [{"status": "unaffected", "version": "1787310717", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhelai3/disk-image-cuda-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux_ai:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux AI 3.4", "versions": [{"status": "unaffected", "version": "1787253912", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhelai3/bootc-aws-cuda-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux_ai:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux AI 3.4", "versions": [{"status": "unaffected", "version": "1787253989", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhelai3/bootc-azure-cuda-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux_ai:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux AI 3.4", "versions": [{"status": "unaffected", "version": "1787254059", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhelai3/bootc-azure-rocm-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux_ai:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux AI 3.4", "versions": [{"status": "unaffected", "version": "1787243961", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhelai3/bootc-cuda-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux_ai:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux AI 3.4", "versions": [{"status": "unaffected", "version": "1787253774", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhelai3/bootc-gcp-cuda-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux_ai:3.4::el9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux AI 3.4", "versions": [{"status": "unaffected", "version": "1787244006", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhelai3/bootc-rocm-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ai_inference_server:3"], "vendor": "Red Hat", "product": "Red Hat AI Inference Server", "packageName": "rhaiis/vllm-neuron-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:ai_inference_server:3"], "vendor": "Red Hat", "product": "Red Hat AI Inference Server", "packageName": "rhaiis/vllm-tpu-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-kserve-agent-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-kserve-controller-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-kserve-router-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-kserve-storage-initializer-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-vllm-cpu-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-vllm-cuda-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-vllm-gaudi-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-vllm-rocm-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}]}], "published": "2026-04-06T16:16:36.463", "references": [{"url": "https://github.com/vllm-project/vllm/security/advisories/GHSA-pq5c-rjhq-qp7p", "tags": ["Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:36005", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:36006", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:57380", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:57387", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:57389", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:57390", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:59144", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:59151", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-34755", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455403", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34755.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-770"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "vLLM is an inference and serving engine for large language models (LLMs). From 0.7.0 to before 0.19.0, the VideoMediaIO.load_base64() method at vllm/multimodal/media/video.py splits video/jpeg data URLs by comma to extract individual JPEG frames, but does not enforce a frame count limit. The num_frames parameter (default: 32), which is enforced by the load_bytes() code path, is completely bypassed in the video/jpeg base64 path. An attacker can send a single API request containing thousands of comma-separated base64-encoded JPEG frames, causing the server to decode all frames into memory and crash with OOM. This vulnerability is fixed in 0.19.0."}], "lastModified": "2026-08-25T13:18:39.240", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "36E450C9-1DE7-4CEE-835B-FBE1D9F37704", "versionEndExcluding": "0.19.0", "versionStartIncluding": "0.7.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}