---
title: "CVE-2026-7301: SGLanG: Multimodal scheduler deserializes untrusted pickle data on 0.0.0.0 ROUTER socket"
url: https://erroneo.us/security/cve/CVE-2026-7301/
description: "CVE-2026-7301 (sglang (PyPI)): SGLangs multimodal generation runtime scheduler's ROUTER socket binds to 0.0.0.0 by default and contains a sink that calls…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-18
date_modified: 2026-05-29
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-7301"
kev: false
cvss: 9.8
epss: 0.00597
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-7301: SGLanG: Multimodal scheduler deserializes untrusted pickle data on 0.0.0.0 ROUTER socket

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.6% , percentile 48: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 48% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes sglang (PyPI) >= 0.5.5, <= 0.5.12, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

SGLangs multimodal generation runtime scheduler's ROUTER socket binds to 0.0.0.0 by default and contains a sink that calls pickle.loads() on incoming messages, enabling RCE when exposed to the internet.

## Affected packages

- PyPI `sglang` >= 0.5.5, <= 0.5.12 → fixed: none listed

## Affected products (CVE record)

- SGLang SGLang: 5.10

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.60% probability of exploitation activity in the next 30 days; percentile 48.

## Sources

- [GitHub Advisory GHSA-gwv6-pq6m-p3rq](https://github.com/advisories/GHSA-gwv6-pq6m-p3rq)
- [CVE.org record CVE-2026-7301](https://www.cve.org/CVERecord?id=CVE-2026-7301)
- [NVD entry CVE-2026-7301](https://nvd.nist.gov/vuln/detail/CVE-2026-7301)
- [github.com](https://github.com/sgl-project/sglang/tree/main/python/sglang)
- [antiproof.ai](https://antiproof.ai/blog/three-rces-in-sglang/)

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Source page: https://erroneo.us/security/cve/CVE-2026-7301/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt