---
id: CVE-2026-109229
title: >-
  SGLang through 0.5.21 contains a denial of service vulnerability that disables
  Pillow decompression bomb protection process-wide by setting
  Image.MAX_IMAGE_PIXELS to None in NanoNemotronVLImageProcessor
summary: >-
  SGLang through 0.5.21 contains a denial of service vulnerability that disables
  Pillow decompression bomb protection process-wide by setting
  Image.MAX_IMAGE_PIXELS to None in NanoNemotronVLImageProcessor. Remote
  attackers can submit small…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-409
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T14:17:12.377'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109229'
references:
  - url: 'https://github.com/sgl-project/sglang'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/nano_nemotron_vl.py#L82
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1952-L1961
    label: disclosure@vulncheck.com
  - url: 'https://github.com/sgl-project/sglang/issues/43707'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/sglang-through-0.5.21-decompression-bomb-dos-via-nanonemotronvlimageprocessor
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T14:50:34.122Z'
---

## Overview

SGLang through 0.5.21 contains a denial of service vulnerability that disables Pillow decompression bomb protection process-wide by setting Image.MAX_IMAGE_PIXELS to None in NanoNemotronVLImageProcessor. Remote attackers can submit small, highly compressed images with huge dimensions to the generic image loader, exhausting worker memory during decoding.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.