{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-9547", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-9547", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-07-03T06:18:44.499Z", "updatedAt": "2026-09-15T06:03:34.802Z", "importedAt": "2026-10-24T01:58:41.756Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "SSH improper host validation", "summary": "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.", "affected": [ { "vendor": "curl", "product": "curl", "defaultStatus": "unaffected", "versions": [ { "version": "7.69.0", "status": "affected", "versionType": "semver", "lessThan": "8.14.2" }, { "version": "8.15.0", "status": "affected", "versionType": "semver", "lessThan": "8.16.1" }, { "version": "8.17.0", "status": "affected", "versionType": "semver", "lessThan": "8.20.1" } ] }, { "vendor": "curl", "product": "curl", "defaultStatus": "unaffected", "versions": [ { "version": "507cf6a13db0375eadd4655b4c64710db29e9cf2", "status": "affected", "versionType": "git", "lessThan": "0b8dbbc63c98777e4584cb9fbd71df3464008ad1" } ] }, { "vendor": "curl", "product": "curl", "defaultStatus": "unaffected", "versions": [ { "version": "8.20.0", "status": "affected" }, { "version": "8.19.0", "status": "affected" }, { "version": "8.18.0", "status": "affected" }, { "version": "8.17.0", "status": "affected" }, { "version": "8.16.0", "status": "affected" }, { "version": "8.15.0", "status": "affected" }, { "version": "8.14.1", "status": "affected" }, { "version": "8.14.0", "status": "affected" }, { "version": "8.13.0", "status": "affected" }, { "version": "8.12.1", "status": "affected" }, { "version": "8.12.0", "status": "affected" }, { "version": "8.11.1", "status": "affected" }, { "version": "8.11.0", "status": "affected" }, { "version": "8.10.1", "status": "affected" }, { "version": "8.10.0", "status": "affected" }, { "version": "8.9.1", "status": "affected" }, { "version": "8.9.0", "status": "affected" }, { "version": "8.8.0", "status": "affected" }, { "version": "8.7.1", "status": "affected" }, { "version": "8.7.0", "status": "affected" }, { "version": "8.6.0", "status": "affected" }, { "version": "8.5.0", "status": "affected" }, { "version": "8.4.0", "status": "affected" }, { "version": "8.3.0", "status": "affected" }, { "version": "8.2.1", "status": "affected" }, { "version": "8.2.0", "status": "affected" }, { "version": "8.1.2", "status": "affected" }, { "version": "8.1.1", "status": "affected" }, { "version": "8.1.0", "status": "affected" }, { "version": "8.0.1", "status": "affected" }, { "version": "8.0.0", "status": "affected" }, { "version": "7.88.1", "status": "affected" }, { "version": "7.88.0", "status": "affected" }, { "version": "7.87.0", "status": "affected" }, { "version": "7.86.0", "status": "affected" }, { "version": "7.85.0", "status": "affected" }, { "version": "7.84.0", "status": "affected" }, { "version": "7.83.1", "status": "affected" }, { "version": "7.83.0", "status": "affected" }, { "version": "7.82.0", "status": "affected" }, { "version": "7.81.0", "status": "affected" }, { "version": "7.80.0", "status": "affected" }, { "version": "7.79.1", "status": "affected" }, { "version": "7.79.0", "status": "affected" }, { "version": "7.78.0", "status": "affected" }, { "version": "7.77.0", "status": "affected" }, { "version": "7.76.1", "status": "affected" }, { "version": "7.76.0", "status": "affected" }, { "version": "7.75.0", "status": "affected" }, { "version": "7.74.0", "status": "affected" }, { "version": "7.73.0", "status": "affected" }, { "version": "7.72.0", "status": "affected" }, { "version": "7.71.1", "status": "affected" }, { "version": "7.71.0", "status": "affected" }, { "version": "7.70.0", "status": "affected" }, { "version": "7.69.1", "status": "affected" }, { "version": "7.69.0", "status": "affected" } ] } ] } } }