Vllm: a completions api request with an empty prompt will crash the vllm api server.

Description

A flaw was found in the vLLM library. A completions API request with an empty prompt will crash the vLLM API server, resulting in a denial of service.

Scores

EPSS (exploitation in 30 days)

0.68% · top 47% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: poc · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• CWE-617: Reachable Assertion (opens in a new tab)All about CWE-617 and its CVEs

Affected products

• vllm

  • affected < 0.5.5

• Red Hat · Red Hat Enterprise Linux AI (RHEL AI)

  All versions: affected

• Red Hat · Red Hat Enterprise Linux AI (RHEL AI)

  All versions: affected

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• PyPIvllmGHSA-w2r7-9579-27hf (opens in a new tab)

What to do

Workaround: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

References (4)

• https://access.redhat.com/security/cve/CVE-2024-8768 (opens in a new tab)vdb-entryx_refsource_REDHAT
• RHBZ#2311895 (opens in a new tab)issue-trackingx_refsource_REDHAT
• https://github.com/vllm-project/vllm/issues/7632 (opens in a new tab)
• https://github.com/vllm-project/vllm/pull/7746 (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-w2r7-9579-27hf (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2024-8768](https://trackcve.app/badge/CVE-2024-8768.svg)](https://trackcve.app/cve/CVE-2024-8768)

Record last updated 20 Nov 2025, 07:34 UTC.