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vuln-cve/data/2026/8xxx/CVE-2026-8458.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-8458",
"assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
"state": "PUBLISHED",
"assignerShortName": "curl",
"dateReserved": "2026-05-13T08:33:36.632Z",
"datePublished": "2026-07-03T06:14:42.258Z",
"dateUpdated": "2026-09-15T06:03:19.330Z"
},
"containers": {
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"providerMetadata": {
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"shortName": "curl",
"dateUpdated": "2026-09-15T06:03:19.330Z"
},
"title": "wrong reuse for different services",
"descriptions": [
{
"lang": "en",
"value": "libcurl might in some circumstances reuse the wrong connection when asked to\ndo Negotiate-authenticated ones, even when they are set to use different\n\"services\".\n\nlibcurl features a pool of recent connections so that subsequent requests can\nreuse an existing connection to avoid overhead.\n\nWhen reusing a connection a range of criteria must be met. Due to a logical\nerror in the code, a request that was issued by an application could\nwrongfully reuse an existing connection to the same server that was\nauthenticated using different services."
}
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],
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],
"references": [
{
"url": "https://curl.se/docs/CVE-2026-8458.json"
},
{
"url": "https://curl.se/docs/CVE-2026-8458.html"
},
{
"url": "https://hackerone.com/reports/3721183"
}
],
"x_osv": {
"schema_version": "1.5.0",
"id": "CURL-CVE-2026-8458",
"aliases": [
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],
"summary": "wrong reuse for different services",
"modified": "2026-09-07T10:34:51.00Z",
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"affects": "both",
"URL": "https://curl.se/docs/CVE-2026-8458.json",
"www": "https://curl.se/docs/CVE-2026-8458.html",
"issue": "https://hackerone.com/reports/3721183",
"CWE": {
"id": "CWE-488",
"desc": "Exposure of Data Element to Wrong Session"
},
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"severity": "Low"
},
"published": "2026-06-24T08:00:00.00Z",
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"credits": [
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"type": "finder"
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{
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}
],
"details": "libcurl might in some circumstances reuse the wrong connection when asked to\ndo Negotiate-authenticated ones, even when they are set to use different\n\"services\".\n\nlibcurl features a pool of recent connections so that subsequent requests can\nreuse an existing connection to avoid overhead.\n\nWhen reusing a connection a range of criteria must be met. Due to a logical\nerror in the code, a request that was issued by an application could\nwrongfully reuse an existing connection to the same server that was\nauthenticated using different services."
},
"problemTypes": [
{
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{
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"description": "Exposure of Data Element to Wrong Session",
"cweId": "CWE-488",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-07-06T17:31:14.007899Z",
"id": "CVE-2026-8458",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
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"title": "CISA ADP Vulnrichment",
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