CVE-2026-5497

vLLM versions 0.8.0 and later are vulnerable to an Out-of-Memory (OOM) Denial of Service (DoS) attack due to unbounded frame count processing in the `VideoMediaIO.load_base64()` method. When processing `video/jpeg` data URLs, the method splits the base64 data string on commas to extract individual JPEG frames without enforcing a frame count limit. An attacker can exploit this by crafting a single API request containing thousands of comma-separated base64-encoded JPEG frames in a data URL, causing the server to decode all frames into memory and crash due to excessive memory consumption. This vulnerability is reachable via the OpenAI-compatible chat completions API and does not require authentication.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/vllm-project/vllm/commit/58ee61422169ce17e08248f8efa1e9df434fe395	Patch
https://huntr.com/bounties/7bd92629-b396-4449-8f88-6c0092530eb4	Exploit Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-5497
https://bugzilla.redhat.com/show_bug.cgi?id=2487813
https://huntr.com/bounties/7bd92629-b396-4449-8f88-6c0092530eb4	Exploit Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5497.json

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-06-11 10:16

Updated : 2026-07-22 12:18

NVD link : CVE-2026-5497

Mitre link : CVE-2026-5497

CVE.ORG link : CVE-2026-5497

JSON object : View

Products Affected

vllm

vllm

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

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