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    "cveMetadata": {
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        "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "state": "PUBLISHED",
        "assignerShortName": "curl",
        "dateReserved": "2026-05-26T06:45:18.723Z",
        "datePublished": "2026-07-03T06:18:14.447Z",
        "dateUpdated": "2026-09-15T06:03:33.325Z"
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                "shortName": "curl",
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            "title": "sending old referer",
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                    "lang": "en",
                    "value": "A vulnerability in libcurl caused the HTTP `Referer:` header to persist even\nwhen explicitly cleared. While the documentation states that passing NULL to\n`CURLOPT_REFERER` suppresses the header, the option failed to clear the\ninternal state. As a result, the previous referrer string was erroneously\nreused and sent in subsequent requests, potentially leaking sensitive\ninformation to unintended servers."
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            "affected": [
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                            "versionType": "git",
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                            "status": "affected"
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                {
                    "url": "https://curl.se/docs/CVE-2026-9546.json"
                },
                {
                    "url": "https://curl.se/docs/CVE-2026-9546.html"
                },
                {
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                "id": "CURL-CVE-2026-9546",
                "aliases": [
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                "summary": "sending old referer",
                "modified": "2026-09-07T10:34:51.00Z",
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                    "package": "curl",
                    "affects": "lib",
                    "URL": "https://curl.se/docs/CVE-2026-9546.json",
                    "www": "https://curl.se/docs/CVE-2026-9546.html",
                    "issue": "https://hackerone.com/reports/3754343",
                    "CWE": {
                        "id": "CWE-200",
                        "desc": "Exposure of Sensitive Information to an Unauthorized Actor"
                    },
                    "last_affected": "8.20.0",
                    "severity": "Low"
                },
                "published": "2026-06-24T08:00:00.00Z",
                "affected": [
                    {
                        "ranges": [
                            {
                                "type": "SEMVER",
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                        "type": "finder"
                    },
                    {
                        "name": "Daniel Stenberg",
                        "type": "remediation developer"
                    }
                ],
                "details": "A vulnerability in libcurl caused the HTTP `Referer:` header to persist even\nwhen explicitly cleared. While the documentation states that passing NULL to\n`CURLOPT_REFERER` suppresses the header, the option failed to clear the\ninternal state. As a result, the previous referrer string was erroneously\nreused and sent in subsequent requests, potentially leaking sensitive\ninformation to unintended servers."
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Exposure of Sensitive Information to an Unauthorized Actor",
                            "cweId": "CWE-200",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "renjian on hackerone",
                    "type": "finder"
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                "metrics": [
                    {
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                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.5,
                            "attackVector": "NETWORK",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "NONE",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-06T16:51:06.094113Z",
                                "id": "CVE-2026-9546",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-06T16:51:49.410Z"
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