535 lines
21 KiB
JSON
535 lines
21 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-2026-9547",
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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": "2026-05-26T06:45:27.665Z",
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"datePublished": "2026-07-03T06:18:44.499Z",
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"dateUpdated": "2026-09-15T06:03:34.802Z"
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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": "2026-09-15T06:03:34.802Z"
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},
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"title": "SSH improper host validation",
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"descriptions": [
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{
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"lang": "en",
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"value": "When a libcurl-based application performs transfers via `SCP://` or `SFTP://`\nand utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an\nuntrusted server. This vulnerability occurs when a server presents a host key\ntype that does not match the specific key type already recorded for that host\nin the `known_hosts` file. Instead of rejecting the mismatch, the callback\nmechanism fails to properly enforce the restriction, allowing the connection\nto succeed without warning and risking a potential man-in-the-middle attack."
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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": "7.69.0",
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"status": "affected",
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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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"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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"versions": [
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{
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"version": "507cf6a13db0375eadd4655b4c64710db29e9cf2",
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"versionType": "git",
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"lessThan": "0b8dbbc63c98777e4584cb9fbd71df3464008ad1"
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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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{
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{
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"version": "8.14.1",
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{
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{
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"version": "8.10.1",
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},
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{
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"version": "8.10.0",
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},
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{
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"version": "8.9.1",
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},
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{
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"version": "8.9.0",
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{
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{
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"version": "8.7.1",
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{
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{
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"version": "8.6.0",
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{
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"version": "8.5.0",
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{
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{
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"version": "8.3.0",
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{
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"version": "8.2.1",
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},
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{
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"version": "8.2.0",
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{
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"version": "8.1.2",
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},
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{
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"version": "8.1.1",
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},
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{
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"version": "8.1.0",
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"status": "affected"
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},
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{
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"version": "8.0.1",
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},
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{
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"version": "8.0.0",
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},
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{
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"version": "7.88.1",
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{
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"version": "7.88.0",
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{
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{
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"version": "7.84.0",
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{
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"version": "7.83.1",
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{
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"version": "7.83.0",
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{
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{
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"version": "7.81.0",
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{
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{
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{
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{
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"version": "7.78.0",
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{
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{
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{
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{
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{
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{
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{
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{
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"defaultStatus": "unaffected"
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],
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"references": [
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{
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"url": "https://curl.se/docs/CVE-2026-9547.json"
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},
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{
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"url": "https://curl.se/docs/CVE-2026-9547.html"
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},
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{
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"url": "https://hackerone.com/reports/3751712"
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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-2026-9547",
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"aliases": [
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"CVE-2026-9547"
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],
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"summary": "SSH improper host validation",
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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": "lib",
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"URL": "https://curl.se/docs/CVE-2026-9547.json",
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"www": "https://curl.se/docs/CVE-2026-9547.html",
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"issue": "https://hackerone.com/reports/3751712",
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"CWE": {
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"id": "CWE-297",
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"desc": "Improper Validation of Certificate with Host Mismatch"
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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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{
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},
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{
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},
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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": "507cf6a13db0375eadd4655b4c64710db29e9cf2"
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{
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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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"8.10.1",
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],
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"credits": [
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{
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"name": "Joshua Rogers (Aisle Research)",
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"type": "finder"
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},
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{
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"name": "Joshua Rogers (Aisle Research)",
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"type": "remediation developer"
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}
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],
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"details": "When a libcurl-based application performs transfers via `SCP://` or `SFTP://`\nand utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an\nuntrusted server. This vulnerability occurs when a server presents a host key\ntype that does not match the specific key type already recorded for that host\nin the `known_hosts` file. Instead of rejecting the mismatch, the callback\nmechanism fails to properly enforce the restriction, allowing the connection\nto succeed without warning and risking a potential man-in-the-middle attack."
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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": "Improper Validation of Certificate with Host Mismatch",
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"cweId": "CWE-297",
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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": "Joshua Rogers (Aisle Research)",
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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": "Joshua Rogers (Aisle Research)",
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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/3751712",
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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": 7.4,
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"attackVector": "NETWORK",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "HIGH",
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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": "2026-07-06T16:47:32.456534Z",
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"id": "CVE-2026-9547",
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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": "no"
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},
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{
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"Technical Impact": "total"
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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": "2026-07-06T16:48:14.469Z"
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}
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}
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]
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}
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} |