{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-81889","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-27T17:48:42.123Z","datePublished":"2026-08-31T20:25:27.456Z","dateUpdated":"2026-09-03T18:04:09.418Z"},"containers":{"cna":{"title":"elFinder: SSRF protection bypass via DNS rebinding in the `fsock_get_contents()` fallback","problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/Studio-42/elFinder/security/advisories/GHSA-8x3q-jpjh-qh5c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Studio-42/elFinder/security/advisories/GHSA-8x3q-jpjh-qh5c"},{"name":"https://github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ff","tags":["x_refsource_MISC"],"url":"https://github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ff"},{"name":"https://github.com/Studio-42/elFinder/commit/6d997386cd0f1abab4706c220b46b0aea0ecff51","tags":["x_refsource_MISC"],"url":"https://github.com/Studio-42/elFinder/commit/6d997386cd0f1abab4706c220b46b0aea0ecff51"},{"name":"https://github.com/Studio-42/elFinder/releases/tag/2.1.70","tags":["x_refsource_MISC"],"url":"https://github.com/Studio-42/elFinder/releases/tag/2.1.70"}],"affected":[{"vendor":"Studio-42","product":"elFinder","versions":[{"version":"< 2.1.70","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-31T20:25:27.456Z"},"descriptions":[{"lang":"en","value":"elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Prior to 2.1.70, elFinder URL uploads in php/elFinder.class.php can bypass server-side request forgery protections when PHP cURL is unavailable because validate_address() validates $info['ip'], but get_remote_contents() selects fsock_get_contents(), which connects to $arr['host'] and performs a second DNS resolution. An attacker able to submit a URL upload can use DNS rebinding to have the first resolution return a public address and the connection resolution return a loopback or private address, causing the internal HTTP response body to be stored as an uploaded file and made readable through elFinder. After a successful fetch, get_headers($url, true) separately requests the original hostname without reusing the validated and pinned connection, creating an additional blind server-side request forgery path even when curl_get_contents() is selected. This issue is fixed in version 2.1.70."}],"source":{"advisory":"GHSA-8x3q-jpjh-qh5c","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/Studio-42/elFinder/security/advisories/GHSA-8x3q-jpjh-qh5c","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-03T18:04:00.867870Z","id":"CVE-2026-81889","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-03T18:04:09.418Z"}}]}}