EUVD-2026-67775
GHSA-63mw-rppr-f2pf
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network fetch triggered by unauthenticated API request; no confidentiality or integrity impact, only availability via memory exhaustion.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
5DescriptionCVE.org
vLLM up to and including 0.17.0 allows remote attackers to cause a Denial of Service via memory exhaustion. The AsyncMediaIO.fetch_audio and AsyncMediaIO.fetch_image functions in multimodal/inputs.py fetch user-supplied media URLs using aiohttp and call r.read() without enforcing a maximum response size, allowing an attacker to exhaust server memory by providing a URL to an arbitrarily large file.
AnalysisAI
Memory exhaustion via unbounded URL fetch in vLLM up to 0.17.0 allows remote unauthenticated attackers to crash the inference server by supplying a multimodal API request pointing to an arbitrarily large file. The AsyncMediaIO.fetch_audio and AsyncMediaIO.fetch_image functions in multimodal/inputs.py use aiohttp to retrieve user-controlled URLs but call r.read() with no response-size cap, meaning the server will buffer the entire remote payload into process memory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the vLLM instance is serving a multimodal model (one that processes image or audio inputs) so that the AsyncMediaIO code path is reachable. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately characterizes the exploitability: the attack requires no authentication, no special timing, and no user interaction beyond submitting a well-formed API request. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary fix is to upgrade vLLM beyond 0.17.0 once a patched release incorporating GitHub PR #36506 is available; the exact released fix version is not independently confirmed from the provided data, so monitor the vLLM GitHub releases page. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all vLLM deployments running version 0.17.0 or earlier and immediately restrict network access to multimodal API endpoints using firewall rules or API gateway policies to trusted internal clients only; apply network segmentation if multimodal endpoints are not business-critical. …
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External POC / Exploit Code
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