{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-87863",
        "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "state": "PUBLISHED",
        "assignerShortName": "curl",
        "dateReserved": "2026-09-09T13:17:38.076Z",
        "datePublished": "2026-10-20T20:13:22.379Z",
        "dateUpdated": "2026-10-20T20:13:22.379Z"
    },
    "containers": {
        "cna": {
            "title": "HSTS response erases persisted entries",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "An authenticated HTTPS origin can supply an HSTS `max-age` value that the\nparser accepts, but time serialization later fails to process. On 64-bit\nsystems, extreme max-age values compute an absolute expiry within standard\ntime integer limits that exceeds calendar time structure bounds. During cache\nsaves, the original HSTS file is truncated before writing a temporary\nreplacement; when serialization fails, the temporary file is deleted, leaving\nan empty or partial cache. Because the save error is silently ignored during\ncleanup, curl exits successfully despite the data loss."
                }
            ],
            "providerMetadata": {
                "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
                "shortName": "curl",
                "dateUpdated": "2026-10-20T20:13:22.379Z"
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "CWE-201 Information Exposure Through Sent Data"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "curl",
                    "product": "curl",
                    "versions": [
                        {
                            "version": "8.22.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.22.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.21.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.21.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.20.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.20.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.19.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.19.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.18.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.18.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.17.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.17.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.16.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.16.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.15.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.15.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.14.1",
                            "status": "affected",
                            "lessThanOrEqual": "8.14.1",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.14.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.14.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.13.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.13.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.12.1",
                            "status": "affected",
                            "lessThanOrEqual": "8.12.1",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.12.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.12.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.11.1",
                            "status": "affected",
                            "lessThanOrEqual": "8.11.1",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.11.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.11.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.10.1",
                            "status": "affected",
                            "lessThanOrEqual": "8.10.1",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.10.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.10.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.9.1",
                            "status": "affected",
                            "lessThanOrEqual": "8.9.1",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.9.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.9.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.8.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.8.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.7.1",
                            "status": "affected",
                            "lessThanOrEqual": "8.7.1",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.7.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.7.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.6.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.6.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.5.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.5.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.4.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.4.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.3.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.3.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.2.1",
                            "status": "affected",
                            "lessThanOrEqual": "8.2.1",
                            "versionType": "semver"
                        },
                        {
                            "version": "8.2.0",
                            "status": "affected",
                            "lessThanOrEqual": "8.2.0",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "references": [
                {
                    "url": "https://curl.se/docs/CVE-2026-87863.json",
                    "name": "json"
                },
                {
                    "url": "https://curl.se/docs/CVE-2026-87863.html",
                    "name": "www"
                },
                {
                    "url": "https://hackerone.com/reports/3972373",
                    "name": "issue"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Stanislav Fort (Aisle Research)",
                    "type": "finder"
                },
                {
                    "lang": "en",
                    "value": "Daniel Stenberg",
                    "type": "remediation developer"
                }
            ]
        }
    }
}