High severity7.5NVD Advisory· Published Oct 12, 2026· Updated Oct 12, 2026
CVE-2026-109228
CVE-2026-109228
Description
SGLang through 0.5.21 contains a resource budget bypass vulnerability that allows remote attackers to override GLM-V video processing limits by supplying fps, max_frames, max_tokens_per_frame and max_image_tokens in the video_url object. Attackers can set these values arbitrarily high so glm4v.py decodes every frame of high-resolution video at full size, exhausting worker memory and denying service.
Affected products
1- Range: <=0.5.21
Patches
Vulnerability mechanics
References
6- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/entrypoints/openai/protocol.pynvd
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/glm4v.pynvd
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/glm4v.pynvd
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/parser/conversation.pynvd
- github.com/sgl-project/sglang/issues/43705nvd
- www.vulncheck.com/advisories/sglang-through-0.5.21-resource-budget-bypass-via-glm-v-video-parametersnvd
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