Threat landscape
medium

vllm (KV Block Handler): Schwachstellen ermöglicht Manipulation von Dateien

WID-SEC-2026-1289 · first 28.04.2026 · updated 28.04.2026 · CVSS 5,6

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What it is about

Open Source vLLM ist eine Open-Source-Bibliothek für schnelle und effiziente Inferenz von Large Language Models (LLMs). Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in vllm ausnutzen, um Daten zu manipulieren und nicht näher spezifizierte Angriffe durchzuführen, wodurch vertrauliche Informationen offengelegt werden oder ein Denial-of-Service-Zustand entstehen können.

Under what conditions?

Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.

What can happen in the worst case

An attacker could use the vulnerability to

  • Daten zu manipulieren, nicht näher spezifizierte Angriffe durchzuführen
  • wodurch vertrauliche Informationen offengelegt werden oder ein Denial-of-Service-Zustand entstehen können

Am I affected?

Affected according to the BSI:

  • Open Source vllm <0.19.0

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

  • Open Source vllm 0.19.0

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.

Information and sources

CVE: CVE-2026-7141

Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.

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