{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-109229", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-12T13:46:33.687Z", "datePublished": "2026-10-12T14:04:32.719Z", "dateUpdated": "2026-10-12T14:04:32.719Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-12T14:04:32.719Z"}, "datePublic": "2026-10-11T00:00:00.000Z", "title": "SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessor", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Handling of Highly Compressed Data (Data Amplification)", "cweId": "CWE-409", "type": "CWE"}]}], "affected": [{"vendor": "sgl-project", "product": "sglang", "defaultStatus": "unaffected", "packageURL": "pkg:pypi/sglang", "repo": "https://github.com/sgl-project/sglang", "collectionURL": "https://pypi.org/project/sglang", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "0.5.21"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:lmsys:sglang:*:*:*:*:*:*:*:*", "versionEndIncluding": "0.5.21"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/sgl-project/sglang/issues/43707", "tags": ["issue-tracking"], "name": "GitHub Issue #43707"}, {"url": "https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/nano_nemotron_vl.py#L82", "tags": ["technical-description"]}, {"url": "https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1952-L1961", "tags": ["technical-description"]}, {"url": "https://github.com/sgl-project/sglang", "tags": ["product"]}, {"name": "VulnCheck Advisory: SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessor", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/sglang-through-0.5.21-decompression-bomb-dos-via-nanonemotronvlimageprocessor"}], "credits": [{"lang": "en", "value": "Jiapeng Li", "type": "finder"}, {"lang": "en", "value": "Jiajia Liu", "type": "finder"}, {"lang": "en", "value": "Jiadai Wang", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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