CVE-2026-64941

{"id": "CVE-2026-64941", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64941", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-10T13:00:10.932600Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "affectedData": [{"cpes": ["cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*"], "repo": "https://github.com/phoenixframework/phoenix_live_view", "vendor": "phoenixframework", "modules": ["'Elixir.Phoenix.LiveView'"], "product": "phoenix_live_view", "versions": [{"status": "affected", "version": "0.5.0", "lessThan": "1.0.19", "versionType": "semver"}, {"status": "affected", "version": "1.1.0-rc.0", "lessThan": "1.1.33", "versionType": "semver"}, {"status": "affected", "version": "1.2.0-rc.0", "lessThan": "1.2.9", "versionType": "semver"}], "packageURL": "pkg:hex/phoenix_live_view", "packageName": "phoenix_live_view", "programFiles": ["lib/phoenix_live_view.ex"], "collectionURL": "https://repo.hex.pm", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.Phoenix.LiveView':redirect/2"}, {"name": "'Elixir.Phoenix.LiveView':push_patch/2"}]}, {"cpes": ["cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*"], "repo": "https://github.com/phoenixframework/phoenix_live_view", "vendor": "phoenixframework", "modules": ["'Elixir.Phoenix.LiveView'"], "product": "phoenix_live_view", "versions": [{"status": "affected", "changes": [{"at": "0b8c733133466912f81adecaea72b6712370242e", "status": "unaffected"}, {"at": "1c164f83df0bb922dfff9c60d125da5b0cfd6619", "status": "unaffected"}, {"at": "2068b304d71907064b159b6bc60c5ad85a876ecf", "status": "unaffected"}], "version": "b20dba3f65a380b2e4868dae03397f13d2daa070", "lessThan": "*", "versionType": "git"}], "packageURL": "pkg:github/phoenixframework/phoenix_live_view", "packageName": "phoenixframework/phoenix_live_view", "programFiles": ["lib/phoenix_live_view.ex"], "collectionURL": "https://github.com", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.Phoenix.LiveView':redirect/2"}, {"name": "'Elixir.Phoenix.LiveView':push_patch/2"}]}]}], "published": "2026-08-10T12:17:19.873", "references": [{"url": "https://cna.erlef.org/cves/CVE-2026-64941.html", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/phoenixframework/phoenix_live_view/commit/0b8c733133466912f81adecaea72b6712370242e", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/phoenixframework/phoenix_live_view/commit/1c164f83df0bb922dfff9c60d125da5b0cfd6619", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/phoenixframework/phoenix_live_view/commit/2068b304d71907064b159b6bc60c5ad85a876ecf", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/phoenixframework/phoenix_live_view/security/advisories/GHSA-36m4-rm57-3prf", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://osv.dev/vulnerability/EEF-CVE-2026-64941", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/phoenixframework/phoenix_live_view/security/advisories/GHSA-36m4-rm57-3prf", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "description": [{"lang": "en", "value": "CWE-601"}]}], "descriptions": [{"lang": "en", "value": "URL Redirection to Untrusted Site ('Open Redirect') vulnerability in phoenixframework phoenix_live_view allows an attacker to send a victim's browser to an origin of the attacker's choosing via a :to value containing ASCII tab, LF or CR.\n\nredirect/2 validates :to through the private validate_local_url!/2 in lib/phoenix_live_view.ex, which is intended to guarantee the target is a path within the application. It rejects a leading // and any backslash, but not ASCII tab, LF or CR. Browsers strip those three characters before parsing a URL, so a value such as /<TAB>/example.com passes validation as a path and is then resolved as the scheme-relative URL //example.com. The live navigation functions share the guard but are not affected, because the client expands their target against the current origin. push_patch/2 is also affected before 0.7.0, which is when that expansion was added.\n\nThis issue affects phoenix_live_view: from 0.5.0 before 1.0.19, from 1.1.0-rc.0 before 1.1.33, and from 1.2.0-rc.0 before 1.2.9."}, {"lang": "es", "value": "Vulnerabilidad de redirecci\u00f3n de URL a sitio no confiable (\u2019redirecci\u00f3n abierta\u2019) en phoenixframework phoenix_live_view permite a un atacante enviar el navegador de una v\u00edctima a un origen elegido por el atacante a trav\u00e9s de un valor :to que contiene tabulador ASCII, LF o CR.\n\nredirect/2 valida :to a trav\u00e9s de la funci\u00f3n privada validate_local_url!/2 en lib/phoenix_live_view.ex, que est\u00e1 destinada a garantizar que el objetivo sea una ruta dentro de la aplicaci\u00f3n. Rechaza un // inicial y cualquier barra invertida, pero no el tabulador ASCII, LF o CR. Los navegadores eliminan esos tres caracteres antes de analizar una URL, por lo que un valor como /[TAB]/example.com pasa la validaci\u00f3n como una ruta y luego se resuelve como la URL relativa al esquema //example.com. Las funciones de navegaci\u00f3n en vivo comparten la protecci\u00f3n pero no se ven afectadas, porque el cliente expande su objetivo contra el origen actual. push_patch/2 tambi\u00e9n se ve afectado antes de 0.7.0, que es cuando se a\u00f1adi\u00f3 esa expansi\u00f3n.\n\nEste problema afecta a phoenix_live_view: desde 0.5.0 antes de 1.0.19, desde 1.1.0-rc.0 antes de 1.1.33, y desde 1.2.0-rc.0 antes de 1.2.9."}], "lastModified": "2026-10-24T16:10:00.153", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}