{"id":"CVE-2026-87865","aliases":[],"cve":{"records":[{"id":"CVE-2026-87865","source":"curl","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-09T13:17:41.347Z","published":"2026-10-20T20:15:13.165Z","modified":"2026-10-30T12:08:50.301Z"}],"publishers":[{"name":"curl","role":"CNA","organizationId":"2499f714-1537-4658-8207-48ae4bb9eae9","modified":"2026-10-20T20:15:13.165Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-30T12:08:50.301Z"}],"references":[{"url":"https://curl.se/docs/CVE-2026-87865.json","tags":[],"source":"curl"},{"url":"https://curl.se/docs/CVE-2026-87865.html","tags":[],"source":"curl"},{"url":"https://hackerone.com/reports/3975408","tags":[],"source":"curl"},{"url":"https://hackerone.com/reports/3975408","tags":["exploit"],"source":"CISA-ADP"}],"weaknesses":[{"id":"CWE-295","description":"CWE-295 Improper Certificate Validation","source":"CISA-ADP"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-30T12:08:42.701402Z","decisions":[{"name":"Exploitation","value":"poc"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"knownhost callback mismatches key as missing","titleSource":"curl","descriptionSource":"curl","description":"When libcurl uses libssh2 with a hashed `known_hosts` file, an unrelated\ninitial entry can cause host key validation to report a key *mismatch* as a\n*missing* key to the `CURLOPT_SSH_KEYFUNCTION` callback.","score":7.4,"severity":"high","published":"2026-10-20T20:15:13.165Z","modified":"2026-10-30T12:08:50.301Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"curl","name":"curl","platforms":[],"versions":[{"version":"8.22.0","status":"affected","lessThanOrEqual":"8.22.0","versionType":"semver"},{"version":"8.21.0","status":"affected","lessThanOrEqual":"8.21.0","versionType":"semver"},{"version":"8.20.0","status":"affected","lessThanOrEqual":"8.20.0","versionType":"semver"},{"version":"8.19.0","status":"affected","lessThanOrEqual":"8.19.0","versionType":"semver"},{"version":"8.18.0","status":"affected","lessThanOrEqual":"8.18.0","versionType":"semver"},{"version":"8.17.0","status":"affected","lessThanOrEqual":"8.17.0","versionType":"semver"},{"version":"8.16.0","status":"affected","lessThanOrEqual":"8.16.0","versionType":"semver"},{"version":"8.15.0","status":"affected","lessThanOrEqual":"8.15.0","versionType":"semver"},{"version":"8.14.1","status":"affected","lessThanOrEqual":"8.14.1","versionType":"semver"},{"version":"8.14.0","status":"affected","lessThanOrEqual":"8.14.0","versionType":"semver"},{"version":"8.13.0","status":"affected","lessThanOrEqual":"8.13.0","versionType":"semver"},{"version":"8.12.1","status":"affected","lessThanOrEqual":"8.12.1","versionType":"semver"},{"version":"8.12.0","status":"affected","lessThanOrEqual":"8.12.0","versionType":"semver"},{"version":"8.11.1","status":"affected","lessThanOrEqual":"8.11.1","versionType":"semver"},{"version":"8.11.0","status":"affected","lessThanOrEqual":"8.11.0","versionType":"semver"},{"version":"8.10.1","status":"affected","lessThanOrEqual":"8.10.1","versionType":"semver"},{"version":"8.10.0","status":"affected","lessThanOrEqual":"8.10.0","versionType":"semver"},{"version":"8.9.1","status":"affected","lessThanOrEqual":"8.9.1","versionType":"semver"},{"version":"8.9.0","status":"affected","lessThanOrEqual":"8.9.0","versionType":"semver"},{"version":"8.8.0","status":"affected","lessThanOrEqual":"8.8.0","versionType":"semver"},{"version":"8.7.1","status":"affected","lessThanOrEqual":"8.7.1","versionType":"semver"},{"version":"8.7.0","status":"affected","lessThanOrEqual":"8.7.0","versionType":"semver"},{"version":"8.6.0","status":"affected","lessThanOrEqual":"8.6.0","versionType":"semver"},{"version":"8.5.0","status":"affected","lessThanOrEqual":"8.5.0","versionType":"semver"},{"version":"8.4.0","status":"affected","lessThanOrEqual":"8.4.0","versionType":"semver"},{"version":"8.3.0","status":"affected","lessThanOrEqual":"8.3.0","versionType":"semver"},{"version":"8.2.1","status":"affected","lessThanOrEqual":"8.2.1","versionType":"semver"},{"version":"8.2.0","status":"affected","lessThanOrEqual":"8.2.0","versionType":"semver"},{"version":"8.1.2","status":"affected","lessThanOrEqual":"8.1.2","versionType":"semver"},{"version":"8.1.1","status":"affected","lessThanOrEqual":"8.1.1","versionType":"semver"},{"version":"8.1.0","status":"affected","lessThanOrEqual":"8.1.0","versionType":"semver"},{"version":"8.0.1","status":"affected","lessThanOrEqual":"8.0.1","versionType":"semver"},{"version":"8.0.0","status":"affected","lessThanOrEqual":"8.0.0","versionType":"semver"},{"version":"7.88.1","status":"affected","lessThanOrEqual":"7.88.1","versionType":"semver"},{"version":"7.88.0","status":"affected","lessThanOrEqual":"7.88.0","versionType":"semver"},{"version":"7.87.0","status":"affected","lessThanOrEqual":"7.87.0","versionType":"semver"},{"version":"7.86.0","status":"affected","lessThanOrEqual":"7.86.0","versionType":"semver"},{"version":"7.85.0","status":"affected","lessThanOrEqual":"7.85.0","versionType":"semver"},{"version":"7.84.0","status":"affected","lessThanOrEqual":"7.84.0","versionType":"semver"},{"version":"7.83.1","status":"affected","lessThanOrEqual":"7.83.1","versionType":"semver"},{"version":"7.83.0","status":"affected","lessThanOrEqual":"7.83.0","versionType":"semver"},{"version":"7.82.0","status":"affected","lessThanOrEqual":"7.82.0","versionType":"semver"},{"version":"7.81.0","status":"affected","lessThanOrEqual":"7.81.0","versionType":"semver"},{"version":"7.80.0","status":"affected","lessThanOrEqual":"7.80.0","versionType":"semver"},{"version":"7.79.1","status":"affected","lessThanOrEqual":"7.79.1","versionType":"semver"},{"version":"7.79.0","status":"affected","lessThanOrEqual":"7.79.0","versionType":"semver"},{"version":"7.78.0","status":"affected","lessThanOrEqual":"7.78.0","versionType":"semver"},{"version":"7.77.0","status":"affected","lessThanOrEqual":"7.77.0","versionType":"semver"},{"version":"7.76.1","status":"affected","lessThanOrEqual":"7.76.1","versionType":"semver"},{"version":"7.76.0","status":"affected","lessThanOrEqual":"7.76.0","versionType":"semver"},{"version":"7.75.0","status":"affected","lessThanOrEqual":"7.75.0","versionType":"semver"},{"version":"7.74.0","status":"affected","lessThanOrEqual":"7.74.0","versionType":"semver"},{"version":"7.73.0","status":"affected","lessThanOrEqual":"7.73.0","versionType":"semver"},{"version":"7.72.0","status":"affected","lessThanOrEqual":"7.72.0","versionType":"semver"},{"version":"7.71.1","status":"affected","lessThanOrEqual":"7.71.1","versionType":"semver"},{"version":"7.71.0","status":"affected","lessThanOrEqual":"7.71.0","versionType":"semver"},{"version":"7.70.0","status":"affected","lessThanOrEqual":"7.70.0","versionType":"semver"},{"version":"7.69.1","status":"affected","lessThanOrEqual":"7.69.1","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"curl","url":"https://www.cve.org/CVERecord?id=CVE-2026-87865"}],"remediation":[],"references":["https://curl.se/docs/CVE-2026-87865.json","https://curl.se/docs/CVE-2026-87865.html","https://hackerone.com/reports/3975408"],"sources":[{"name":"CVE","id":"CVE-2026-87865","modified":"2026-10-30T12:08:50.301Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-87865"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4}],"sourceAffected":[],"observedAt":"2026-10-30T12:15:50.471Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T00:50:33.640Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T12:20:34.092Z","attemptedAt":"2026-10-30T12:20:34.092Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-30T12:20:34.408Z","attemptedAt":"2026-10-30T12:20:34.408Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T12:20:34.410Z","attemptedAt":"2026-10-30T12:20:34.410Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-30T12:20:34.418Z","attemptedAt":"2026-10-30T12:20:34.418Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-87865","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87865","modified":"2026-10-30T12:16:46.393","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","checkedAt":"2026-10-30T12:20:34.092Z"},{"source":"GitHub Advisory Database","id":"GHSA-4cqc-m8hm-7c9j","url":"https://github.com/advisories/GHSA-4cqc-m8hm-7c9j","modified":"2026-10-20T21:31:17Z","checkedAt":"2026-10-30T12:20:34.408Z"},{"source":"ENISA EUVD","id":"EUVD-2026-105312","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-105312","modified":"Oct 20, 2026, 8:15:13 PM","checkedAt":"2026-10-30T12:20:34.410Z"},{"source":"FIRST EPSS","id":"CVE-2026-87865","url":"https://www.first.org/epss/","probability":0.00244,"percentile":0.15584,"date":"2026-10-29","checkedAt":"2026-10-30T12:20:34.418Z"}],"aiSummary":null}