CVE-2026-64941

{
  "id": "CVE-2026-64941",
  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
  "published": "2026-08-10T12:17:19.873",
  "lastModified": "2026-10-24T16:10:00.153",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "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 redirección de URL a sitio no confiable (’redirección abierta’) en phoenixframework phoenix_live_view permite a un atacante enviar el navegador de una víctima a un origen elegido por el atacante a través de un valor :to que contiene tabulador ASCII, LF o CR.\n\nredirect/2 valida :to a través de la función privada validate_local_url!/2 en lib/phoenix_live_view.ex, que está destinada a garantizar que el objetivo sea una ruta dentro de la aplicación. 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 validación como una ruta y luego se resuelve como la URL relativa al esquema //example.com. Las funciones de navegación en vivo comparten la protección pero no se ven afectadas, porque el cliente expande su objetivo contra el origen actual. push_patch/2 también se ve afectado antes de 0.7.0, que es cuando se añadió esa expansión.\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."
    }
  ],
  "affected": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "affectedData": [
        {
          "vendor": "phoenixframework",
          "product": "phoenix_live_view",
          "defaultStatus": "unaffected",
          "collectionURL": "https://repo.hex.pm",
          "packageName": "phoenix_live_view",
          "cpes": [
            "cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "'Elixir.Phoenix.LiveView'"
          ],
          "programFiles": [
            "lib/phoenix_live_view.ex"
          ],
          "programRoutines": [
            {
              "name": "'Elixir.Phoenix.LiveView':redirect/2"
            },
            {
              "name": "'Elixir.Phoenix.LiveView':push_patch/2"
            }
          ],
          "repo": "https://github.com/phoenixframework/phoenix_live_view",
          "packageURL": "pkg:hex/phoenix_live_view",
          "versions": [
            {
              "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",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "phoenixframework",
          "product": "phoenix_live_view",
          "defaultStatus": "unaffected",
          "collectionURL": "https://github.com",
          "packageName": "phoenixframework/phoenix_live_view",
          "cpes": [
            "cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "'Elixir.Phoenix.LiveView'"
          ],
          "programFiles": [
            "lib/phoenix_live_view.ex"
          ],
          "programRoutines": [
            {
              "name": "'Elixir.Phoenix.LiveView':redirect/2"
            },
            {
              "name": "'Elixir.Phoenix.LiveView':push_patch/2"
            }
          ],
          "repo": "https://github.com/phoenixframework/phoenix_live_view",
          "packageURL": "pkg:github/phoenixframework/phoenix_live_view",
          "versions": [
            {
              "version": "b20dba3f65a380b2e4868dae03397f13d2daa070",
              "lessThan": "*",
              "versionType": "git",
              "status": "affected",
              "changes": [
                {
                  "at": "0b8c733133466912f81adecaea72b6712370242e",
                  "status": "unaffected"
                },
                {
                  "at": "1c164f83df0bb922dfff9c60d125da5b0cfd6619",
                  "status": "unaffected"
                },
                {
                  "at": "2068b304d71907064b159b6bc60c5ad85a876ecf",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "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",
          "baseScore": 2.1,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "userInteraction": "ACTIVE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-10T13:00:10.932600Z",
          "id": "CVE-2026-64941",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    }
  ],
  "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"
    }
  ]
}