CVE-2026-73559Disclosure(vllm / vllm)

LOWCVSS 6.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

vLLM is an inference and serving engine for large language models. From 0.19.0 until 0.26.0, the /v1/completions CompletionRequest.prompt field in vllm/entrypoints/openai/completion/protocol.py accepts an unbounded list[str] or list[list[int]], prompt_to_seq() in vllm/renderers/inputs/preprocess.py and OnlineRenderer.preprocess_completion() in vllm/renderers/online_renderer.py expand every element, and vllm/entrypoints/openai/completion/serving.py creates one engine generator and response slot per prompt, allowing an authenticated API client to exhaust CPU, memory, async scheduling capacity, engine request slots, and response buffering with one request. This issue is fixed in version 0.26.0.

vllm CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

Exploit / PoC references

Other references

https://github.com/vllm-project/vllm/releases/tag/v0.26.0

Weakness type (CWE)

CWE-400

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

vllm

Threat summary

2 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
General: 1 classified signal
2 total mentions across 1 day

Affected systems

Vendors

vllm

Products

vllm

Deep dive

Activity timeline2 mentions / 1d

Signal classification2 categories

Disclosure

150.0%

General

150.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Infoflowcloud@infoflowcloud46d
Disclosure
🚨*CVE* CVE-2026-73559 vLLM is an inference and serving engine for large language models. From 0.19.0 until 0.26.0, the /v1/completions CompletionRequest.prompt field in vllm/entrypoints/op… https://www.cve.org/CVERecord?id=CVE-2026-73559 ----- Traducción: CVE-2026-73559 vLL… https://infoflow.cloud`
Post summary
The tweet shares the CVE identifier, affected component and version range, linking to the official CVE record, indicating a disclosure of vulnerability details.
0000027
97 followersView on X
CVE@CVEnew46d
General
CVE-2026-73559 vLLM is an inference and serving engine for large language models. From 0.19.0 until 0.26.0, the /v1/completions CompletionRequest.prompt field in vllm/entrypoints/op… https://www.cve.org/CVERecord?id=CVE-2026-73559
Post summary
The post briefly mentions CVE-2026-73559 in vLLM but provides no substantive details on exploitation, defenses, or patches.
00000844
57.9K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	vllm	vllm	-	-	-

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