sgl-project SGLang up to 0.5.21 Image Processor NanoNemotronVLImageProcessor denial of service

Summaryinfo

A vulnerability was found in sgl-project SGLang up to 0.5.21. It has been declared as problematic. The impacted element is the function NanoNemotronVLImageProcessor of the component Image Processor. The manipulation results in denial of service. This vulnerability is known as CVE-2026-109229. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in sgl-project SGLang up to 0.5.21. It has been classified as problematic. Affected is the function NanoNemotronVLImageProcessor of the component Image Processor. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-109229 since 10/12/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Project Management Software

Vendor

• sgl-project

Name

• SGLang

Version

• 0.5.0
• 0.5.1
• 0.5.2
• 0.5.3
• 0.5.4
• 0.5.5
• 0.5.6
• 0.5.7
• 0.5.8
• 0.5.9
• 0.5.10
• 0.5.11
• 0.5.12
• 0.5.13
• 0.5.14
• 0.5.15
• 0.5.16
• 0.5.17
• 0.5.18
• 0.5.19
• 0.5.20
• 0.5.21

Website

• Product: https://github.com/sgl-project/sglang/

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