CVE-2026-120235
Full vulnerability record from the local CVENow database.
Description
A security vulnerability has been detected in ag-ui-protocol ag-ui up to 0.0.58. Affected is the function parseSSEStream of the file sdks/typescript/packages/client/src/transform/sse.ts of the component SSE Parser. The manipulation leads to resource consumption. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is 9e7b2b00bce215bbf731f1e6094f63812527c432. The affected component should be upgraded.
Severity
LOW
CVSS score
2.1
(v4.0)
Vulnerability status
Received
Source identifier
Published
2026-11-01 16:18:14.757000
Last modified
2026-11-01 16:18:14.757000
View original CVE JSON
{
"id": "CVE-2026-120235",
"sourceIdentifier": "[email protected]",
"published": "2026-11-01T16:18:14.757",
"lastModified": "2026-11-01T16:18:14.757",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A security vulnerability has been detected in ag-ui-protocol ag-ui up to 0.0.58. Affected is the function parseSSEStream of the file sdks/typescript/packages/client/src/transform/sse.ts of the component SSE Parser. The manipulation leads to resource consumption. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is 9e7b2b00bce215bbf731f1e6094f63812527c432. The affected component should be upgraded."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "ag-ui-protocol",
"product": "ag-ui",
"cpes": [
"cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*"
],
"modules": [
"SSE Parser"
],
"versions": [
{
"version": "0.0.1",
"status": "affected"
},
{
"version": "0.0.2",
"status": "affected"
},
{
"version": "0.0.3",
"status": "affected"
},
{
"version": "0.0.4",
"status": "affected"
},
{
"version": "0.0.5",
"status": "affected"
},
{
"version": "0.0.6",
"status": "affected"
},
{
"version": "0.0.7",
"status": "affected"
},
{
"version": "0.0.8",
"status": "affected"
},
{
"version": "0.0.9",
"status": "affected"
},
{
"version": "0.0.10",
"status": "affected"
},
{
"version": "0.0.11",
"status": "affected"
},
{
"version": "0.0.12",
"status": "affected"
},
{
"version": "0.0.13",
"status": "affected"
},
{
"version": "0.0.14",
"status": "affected"
},
{
"version": "0.0.15",
"status": "affected"
},
{
"version": "0.0.16",
"status": "affected"
},
{
"version": "0.0.17",
"status": "affected"
},
{
"version": "0.0.18",
"status": "affected"
},
{
"version": "0.0.19",
"status": "affected"
},
{
"version": "0.0.20",
"status": "affected"
},
{
"version": "0.0.21",
"status": "affected"
},
{
"version": "0.0.22",
"status": "affected"
},
{
"version": "0.0.23",
"status": "affected"
},
{
"version": "0.0.24",
"status": "affected"
},
{
"version": "0.0.25",
"status": "affected"
},
{
"version": "0.0.26",
"status": "affected"
},
{
"version": "0.0.27",
"status": "affected"
},
{
"version": "0.0.28",
"status": "affected"
},
{
"version": "0.0.29",
"status": "affected"
},
{
"version": "0.0.30",
"status": "affected"
},
{
"version": "0.0.31",
"status": "affected"
},
{
"version": "0.0.32",
"status": "affected"
},
{
"version": "0.0.33",
"status": "affected"
},
{
"version": "0.0.34",
"status": "affected"
},
{
"version": "0.0.35",
"status": "affected"
},
{
"version": "0.0.36",
"status": "affected"
},
{
"version": "0.0.37",
"status": "affected"
},
{
"version": "0.0.38",
"status": "affected"
},
{
"version": "0.0.39",
"status": "affected"
},
{
"version": "0.0.40",
"status": "affected"
},
{
"version": "0.0.41",
"status": "affected"
},
{
"version": "0.0.42",
"status": "affected"
},
{
"version": "0.0.43",
"status": "affected"
},
{
"version": "0.0.44",
"status": "affected"
},
{
"version": "0.0.45",
"status": "affected"
},
{
"version": "0.0.46",
"status": "affected"
},
{
"version": "0.0.47",
"status": "affected"
},
{
"version": "0.0.48",
"status": "affected"
},
{
"version": "0.0.49",
"status": "affected"
},
{
"version": "0.0.50",
"status": "affected"
},
{
"version": "0.0.51",
"status": "affected"
},
{
"version": "0.0.52",
"status": "affected"
},
{
"version": "0.0.53",
"status": "affected"
},
{
"version": "0.0.54",
"status": "affected"
},
{
"version": "0.0.55",
"status": "affected"
},
{
"version": "0.0.56",
"status": "affected"
},
{
"version": "0.0.57",
"status": "affected"
},
{
"version": "0.0.58",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"baseScore": 2.1,
"baseSeverity": "LOW",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "PROOF_OF_CONCEPT",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "LOW"
},
"exploitabilityScore": 2.8,
"impactScore": 1.4
}
],
"cvssMetricV2": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "2.0",
"vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
"baseScore": 4.0,
"accessVector": "NETWORK",
"accessComplexity": "LOW",
"authentication": "SINGLE",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "PARTIAL"
},
"baseSeverity": "MEDIUM",
"exploitabilityScore": 8.0,
"impactScore": 2.9,
"acInsufInfo": false,
"obtainAllPrivilege": false,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-400"
},
{
"lang": "en",
"value": "CWE-404"
}
]
}
],
"references": [
{
"url": "https://github.com/ag-ui-protocol/ag-ui/",
"source": "[email protected]"
},
{
"url": "https://github.com/ag-ui-protocol/ag-ui/commit/9e7b2b00bce215bbf731f1e6094f63812527c432",
"source": "[email protected]"
},
{
"url": "https://github.com/ag-ui-protocol/ag-ui/issues/2522",
"source": "[email protected]"
},
{
"url": "https://github.com/ag-ui-protocol/ag-ui/pull/2627",
"source": "[email protected]"
},
{
"url": "https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/cve/CVE-2026-120235",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/submit/1015147",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/vuln/429594",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/vuln/429594/cti",
"source": "[email protected]"
}
]
}