CVE-2026-109229
SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessor
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-409 |
| Vendor | sgl-project |
| Product | sglang |
| Published | Oct 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
sgl-project / sglang
0 ≤ 0.5.21
References
github.com: https://github.com/sgl-project/sglang/issues/43707 github.com: https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/nano_nemotron_vl.py#L82 github.com: https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1952-L1961 github.com: https://github.com/sgl-project/sglang vulncheck.com: https://www.vulncheck.com/advisories/sglang-through-0.5.21-decompression-bomb-dos-via-nanonemotronvlimageprocessor
Credits
Jiapeng Li Jiajia Liu Jiadai Wang