315 lines
13 KiB
JSON
315 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-9545",
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"assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
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"state": "PUBLISHED",
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"assignerShortName": "curl",
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"dateReserved": "2026-05-26T06:45:08.680Z",
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"datePublished": "2026-07-03T06:17:55.931Z",
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"dateUpdated": "2026-09-15T06:03:31.804Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
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"shortName": "curl",
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"dateUpdated": "2026-09-15T06:03:31.804Z"
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},
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"title": "exposing HTTP/3 early data",
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"descriptions": [
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{
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"lang": "en",
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"value": "In this scenario, libcurl first uses a proper HTTP/3 server for the initial\ntransfers, and when it makes a second transfer to the same site it has been\nreplaced by the attacker's impostor machine - without a valid certificate.\n\nWhen libcurl returns to the hostname the second time with a cached SSL session\n(`CURLOPT_SSL_SESSIONID_CACHE` is not disabled) and early data enabled (the\n`CURLSSLOPT_EARLYDATA` bit is set in `CURLOPT_SSL_OPTIONS`), libcurl might\nsend off the second request's bytes on that new connection *before* enforcing\nthe certificate verification failure. Potentially leaking sensitive\ninformation."
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}
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],
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"affected": [
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{
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"vendor": "curl",
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"product": "curl",
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"versions": [
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{
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"version": "8.11.0",
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"status": "affected",
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"versionType": "semver",
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"lessThan": "8.14.2"
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},
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{
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"version": "8.15.0",
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"status": "affected",
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"versionType": "semver",
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"lessThan": "8.16.1"
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},
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{
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"version": "8.17.0",
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"status": "affected",
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"versionType": "semver",
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"lessThan": "8.20.1"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "curl",
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"product": "curl",
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"versions": [
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{
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"version": "962097b8dd44ed5b9e7984bc1cdffdbdd566857f",
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"status": "affected",
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"versionType": "git",
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"lessThan": "7b9613fa9b1a5e04301a3920eef58e8138dad05e"
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}
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],
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"defaultStatus": "unaffected",
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"repo": "https://github.com/curl/curl.git"
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},
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{
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"vendor": "curl",
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"product": "curl",
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"versions": [
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{
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"version": "8.20.0",
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"status": "affected"
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},
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{
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"version": "8.19.0",
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"status": "affected"
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},
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{
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"version": "8.18.0",
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"status": "affected"
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},
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{
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"version": "8.17.0",
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"status": "affected"
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},
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{
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"version": "8.16.0",
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"status": "affected"
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},
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{
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"version": "8.15.0",
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"status": "affected"
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},
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{
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"version": "8.14.1",
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"status": "affected"
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},
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{
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"version": "8.14.0",
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"status": "affected"
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},
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{
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"version": "8.13.0",
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"status": "affected"
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},
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{
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"version": "8.12.1",
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"status": "affected"
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},
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{
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"version": "8.12.0",
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"status": "affected"
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},
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{
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"version": "8.11.1",
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"status": "affected"
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},
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{
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"version": "8.11.0",
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"status": "affected"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"references": [
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{
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"url": "https://curl.se/docs/CVE-2026-9545.json"
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},
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{
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"url": "https://curl.se/docs/CVE-2026-9545.html"
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},
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{
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"url": "https://hackerone.com/reports/3752888"
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}
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],
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"x_osv": {
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"schema_version": "1.5.0",
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"id": "CURL-CVE-2026-9545",
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"aliases": [
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"CVE-2026-9545"
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],
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"summary": "exposing HTTP/3 early data",
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"modified": "2026-09-07T10:34:51.00Z",
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"database_specific": {
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"package": "curl",
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"affects": "both",
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"URL": "https://curl.se/docs/CVE-2026-9545.json",
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"www": "https://curl.se/docs/CVE-2026-9545.html",
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"issue": "https://hackerone.com/reports/3752888",
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"CWE": {
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"id": "CWE-200",
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"desc": "Exposure of Sensitive Information to an Unauthorized Actor"
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},
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"last_affected": "8.20.0",
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"severity": "Low"
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},
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"published": "2026-06-24T08:00:00.00Z",
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"affected": [
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{
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"ranges": [
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{
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"type": "SEMVER",
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"events": [
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{
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"introduced": "8.11.0"
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},
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{
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"fixed": "8.14.2"
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},
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{
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"introduced": "8.15.0"
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},
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{
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"fixed": "8.16.1"
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},
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{
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"introduced": "8.17.0"
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},
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{
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"fixed": "8.20.1"
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}
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]
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},
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{
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"type": "GIT",
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"repo": "https://github.com/curl/curl.git",
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"events": [
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{
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"introduced": "962097b8dd44ed5b9e7984bc1cdffdbdd566857f"
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},
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{
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"fixed": "7b9613fa9b1a5e04301a3920eef58e8138dad05e"
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}
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]
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}
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],
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"versions": [
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"8.20.0",
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"8.19.0",
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"8.18.0",
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"8.17.0",
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"8.16.0",
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"8.15.0",
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"8.14.1",
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"8.14.0",
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"8.13.0",
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"8.12.1",
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"8.12.0",
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"8.11.1",
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"8.11.0"
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]
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}
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],
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"credits": [
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{
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"name": "Eunsoo Kim (Autonomous Code Security team at Microsoft)",
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"type": "finder"
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},
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{
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"name": "Stefan Eissing",
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"type": "remediation developer"
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}
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],
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"details": "In this scenario, libcurl first uses a proper HTTP/3 server for the initial\ntransfers, and when it makes a second transfer to the same site it has been\nreplaced by the attacker's impostor machine - without a valid certificate.\n\nWhen libcurl returns to the hostname the second time with a cached SSL session\n(`CURLOPT_SSL_SESSIONID_CACHE` is not disabled) and early data enabled (the\n`CURLSSLOPT_EARLYDATA` bit is set in `CURLOPT_SSL_OPTIONS`), libcurl might\nsend off the second request's bytes on that new connection *before* enforcing\nthe certificate verification failure. Potentially leaking sensitive\ninformation."
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},
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "Exposure of Sensitive Information to an Unauthorized Actor",
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"cweId": "CWE-200",
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"type": "CWE"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Eunsoo Kim (Autonomous Code Security team at Microsoft)",
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"type": "finder"
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},
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{
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"lang": "en",
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"value": "Stefan Eissing",
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"type": "remediation developer"
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}
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],
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"x_generator": {
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"engine": "cvelib 1.8.0"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://hackerone.com/reports/3752888",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.5,
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"attackVector": "NETWORK",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "NONE",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "HIGH"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-07-06T16:52:42.898546Z",
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"id": "CVE-2026-9545",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-07-06T16:53:23.396Z"
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}
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}
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]
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}
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} |