---
title: "CVE-2026-7304: SGLang: Unauthenticated RCE via --enable-custom-logit-processor"
url: https://erroneo.us/security/cve/CVE-2026-7304/
description: "CVE-2026-7304 (sglang (PyPI)): SGLangs multimodal generation runtime is vulnerable to unauthenticated remote code execution when the…"
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-2026-7304"
kev: false
cvss: 9.8
epss: 0.00875
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-7304: SGLang: Unauthenticated RCE via --enable-custom-logit-processor

**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 0.9% , percentile 59: FIRST’s model estimates a 0.9% chance of exploitation activity in the next 30 days, higher than 59% of all scored CVEs (moderate). 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) >= 0.4.1.post7, <= 0.5.12, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

SGLangs multimodal generation runtime is vulnerable to unauthenticated remote code execution when the --enable-custom-logit-processor option is enabled, as Python objects loaded via dill.loads() will be deserialized without validation.

## Affected packages

- PyPI `sglang` >= 0.4.1.post7, <= 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): 0.88% probability of exploitation activity in the next 30 days; percentile 59.

## Sources

- [GitHub Advisory GHSA-36m8-w8qf-g76p](https://github.com/advisories/GHSA-36m8-w8qf-g76p)
- [CVE.org record CVE-2026-7304](https://www.cve.org/CVERecord?id=CVE-2026-7304)
- [NVD entry CVE-2026-7304](https://nvd.nist.gov/vuln/detail/CVE-2026-7304)
- [github.com](https://github.com/sgl-project/sglang/tree/main/python/sglang)
- [antiproof.ai](https://antiproof.ai/blog/three-rces-in-sglang/)

---
Source page: https://erroneo.us/security/cve/CVE-2026-7304/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt