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    "cveMetadata": {
        "cveId": "CVE-2026-92790",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-09-16T19:31:53.563Z",
        "datePublished": "2026-09-16T20:32:46.062Z",
        "dateUpdated": "2026-09-17T15:04:18.836Z"
    },
    "containers": {
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                "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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                "dateUpdated": "2026-09-16T20:32:46.062Z"
            },
            "datePublic": "2026-08-26T00:00:00.000Z",
            "title": "Higress before 2.2.4 Rate Limit Bypass via Malformed Cookie Header",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Higress before 2.2.4 panics when processing a Cookie header segment without an equals sign, causing the plugin wrapper to recover and return a continue action that bypasses AI token rate limiting. Unauthenticated attackers can craft a malformed Cookie header to skip rate limit checks and exceed thresholds intended to restrict costly model backend calls."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Check or Handling of Exceptional Conditions",
                            "cweId": "CWE-703",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "higress-group",
                    "product": "higress",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/alibaba/higress/v2",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "2.2.4",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "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:L/VA:L/SC:N/SI:N/SA:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6.9,
                        "baseSeverity": "MEDIUM"
                    }
                },
                {
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                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "LOW",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/higress-group/higress/issues/4599",
                    "tags": [
                        "issue-tracking"
                    ],
                    "name": "GitHub Issue #4599"
                },
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                    "url": "https://github.com/higress-group/higress",
                    "tags": [
                        "product"
                    ]
                },
                {
                    "url": "https://github.com/higress-group/higress/blob/v2.2.3/plugins/wasm-go/extensions/ai-token-ratelimit/util/utils.go#L52-L63",
                    "tags": [
                        "technical-description"
                    ],
                    "name": "ExtractCookieValueByKey indexes kv[1] without checking the split length"
                },
                {
                    "url": "https://github.com/higress-group/higress/blob/v2.2.4/plugins/wasm-go/extensions/ai-token-ratelimit/util/utils.go#L52-L63",
                    "tags": [
                        "patch"
                    ],
                    "name": "2.2.4 uses SplitN with a length guard"
                },
                {
                    "name": "VulnCheck Advisory: Higress before 2.2.4 Rate Limit Bypass via Malformed Cookie Header",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/higress-before-2.2.4-rate-limit-bypass-via-malformed-cookie-header"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "George Chen",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "vulncheck-endgame"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/higress-group/higress/issues/4599",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-17T15:03:59.793001Z",
                                "id": "CVE-2026-92790",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-17T15:04:18.836Z"
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    }
}