cve-2025-9086
Vulnerability from cvelistv5
Published
2025-09-12 05:10
Modified
2025-09-12 17:16
Severity ?
EPSS score ?
Summary
Out of bounds read for cookie path
References
{
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"integrityImpact": "NONE",
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{
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"version": "2.0.3"
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"credits": [
{
"lang": "en",
"type": "finder",
"value": "Google Big Sleep"
},
{
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"type": "remediation developer",
"value": "Daniel Stenberg"
}
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"descriptions": [
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"lang": "en",
"value": "1. A cookie is set using the `secure` keyword for `https://target`\n2. curl is redirected to or otherwise made to speak with `http://target` (same\n hostname, but using clear text HTTP) using the same cookie set\n3. The same cookie name is set - but with just a slash as path (`path=\u0027/\u0027`).\n Since this site is not secure, the cookie *should* just be ignored.\n4. A bug in the path comparison logic makes curl read outside a heap buffer\n boundary\n\nThe bug either causes a crash or it potentially makes the comparison come to\nthe wrong conclusion and lets the clear-text site override the contents of the\nsecure cookie, contrary to expectations and depending on the memory contents\nimmediately following the single-byte allocation that holds the path.\n\nThe presumed and correct behavior would be to plainly ignore the second set of\nthe cookie since it was already set as secure on a secure host so overriding\nit on an insecure host should not be okay."
}
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"descriptions": [
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"description": "CWE-125 Out-of-bounds Read",
"lang": "en"
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"dateUpdated": "2025-09-12T05:10:03.815Z",
"orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
"shortName": "curl"
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"url": "https://curl.se/docs/CVE-2025-9086.json"
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{
"name": "www",
"url": "https://curl.se/docs/CVE-2025-9086.html"
},
{
"name": "issue",
"url": "https://hackerone.com/reports/3294999"
}
],
"title": "Out of bounds read for cookie path"
}
},
"cveMetadata": {
"assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
"assignerShortName": "curl",
"cveId": "CVE-2025-9086",
"datePublished": "2025-09-12T05:10:03.815Z",
"dateReserved": "2025-08-16T05:40:23.800Z",
"dateUpdated": "2025-09-12T17:16:20.317Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-9086\",\"sourceIdentifier\":\"2499f714-1537-4658-8207-48ae4bb9eae9\",\"published\":\"2025-09-12T06:15:44.100\",\"lastModified\":\"2025-09-15T15:21:42.937\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"1. A cookie is set using the `secure` keyword for `https://target`\\n2. curl is redirected to or otherwise made to speak with `http://target` (same\\n hostname, but using clear text HTTP) using the same cookie set\\n3. The same cookie name is set - but with just a slash as path (`path=\u0027/\u0027`).\\n Since this site is not secure, the cookie *should* just be ignored.\\n4. A bug in the path comparison logic makes curl read outside a heap buffer\\n boundary\\n\\nThe bug either causes a crash or it potentially makes the comparison come to\\nthe wrong conclusion and lets the clear-text site override the contents of the\\nsecure cookie, contrary to expectations and depending on the memory contents\\nimmediately following the single-byte allocation that holds the path.\\n\\nThe presumed and correct behavior would be to plainly ignore the second set of\\nthe cookie since it was already set as secure on a secure host so overriding\\nit on an insecure host should not be okay.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://curl.se/docs/CVE-2025-9086.html\",\"source\":\"2499f714-1537-4658-8207-48ae4bb9eae9\"},{\"url\":\"https://curl.se/docs/CVE-2025-9086.json\",\"source\":\"2499f714-1537-4658-8207-48ae4bb9eae9\"},{\"url\":\"https://hackerone.com/reports/3294999\",\"source\":\"2499f714-1537-4658-8207-48ae4bb9eae9\"}]}}"
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.