GHSA-9f8f-2vmf-885j · Severity: high · Ecosystem: pip — Data exposure via ZeroMQ on multi-node vLLM deployment
vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Versions starting from 0.5.2 and prior to 0.8.5 are vulnerable to denial of service and data exposure via ZeroMQ on multi-node vLLM deployment. In a multi-node vLLM deployment, vLLM uses ZeroMQ for some multi-node communication purposes. The primary vLLM host opens an XPUB ZeroMQ socket and binds it to ALL interfaces. While the socket is always opened for a multi-node deployment, it is only used when doing tensor parallelism across multiple hosts. Any client with network access to this host can connect to this XPUB socket unless its port is blocked by a firewall. Once connected, these arbitrary clients will receive all of the same data broadcasted to all of the secondary vLLM hosts. This data is internal vLLM state information that is not useful to an attacker. By potentially connecting to this socket many times and not reading data published to them, an attacker can also cause a denial of service by slowing down or potentially blocking the publisher. This issue has been patched in version 0.8.5.
Conclusion & alert: CVE-2025-30202 is rated High Exploit Risk (71.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.79%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-07 | 0.45% | 0.79% | +0.35% |
| 2 | 2026-02-24 | 0.15% | 0.45% | +0.30% |
| 3 | 2025-10-08 | — | 0.15% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-9f8f-2vmf-885j · Severity: high · Ecosystem: pip — Data exposure via ZeroMQ on multi-node vLLM deployment
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-30202 |
| URL | Tags |
|---|---|
| https://github.com/vllm-project/vllm/commit/a0304dc504c85f421d38ef47c64f83046a13641c | Patch |
| https://github.com/vllm-project/vllm/pull/6183 | Issue Tracking Patch |
| https://github.com/vllm-project/vllm/security/advisories/GHSA-9f8f-2vmf-885j | Exploit Vendor Advisory |