{"containers":{"cna":{"affected":[{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Phoenix.LiveView.Utils'"],"packageName":"phoenix_live_view","packageURL":"pkg:hex/phoenix_live_view","product":"phoenix_live_view","programFiles":["lib/phoenix_live_view/utils.ex"],"programRoutines":[{"name":"'Elixir.Phoenix.LiveView.Utils':valid_destination!/2"},{"name":"'Elixir.Phoenix.LiveView.Utils':valid_live_navigation_destination!/2"}],"repo":"https://github.com/phoenixframework/phoenix_live_view","vendor":"phoenixframework","versions":[{"lessThan":"1.2.7","status":"affected","version":"1.2.2","versionType":"semver"}]},{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Phoenix.LiveView.Utils'"],"packageName":"phoenixframework/phoenix_live_view","packageURL":"pkg:github/phoenixframework/phoenix_live_view","product":"phoenix_live_view","programFiles":["lib/phoenix_live_view/utils.ex"],"programRoutines":[{"name":"'Elixir.Phoenix.LiveView.Utils':valid_destination!/2"},{"name":"'Elixir.Phoenix.LiveView.Utils':valid_live_navigation_destination!/2"}],"repo":"https://github.com/phoenixframework/phoenix_live_view","vendor":"phoenixframework","versions":[{"lessThan":"86165533e311469a1b62093fd182d9d874de8106","status":"affected","version":"4b63216ae68886db99cf7772af23372d76c40e7e","versionType":"git"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*","versionEndExcluding":"1.2.7","versionStartIncluding":"1.2.2","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Barna Kovacs"},{"lang":"en","type":"remediation developer","value":"Steffen Deusch"},{"lang":"en","type":"analyst","value":"José Valim"},{"lang":"en","type":"analyst","value":"Jonatan Männchen / EEF"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Cross-site scripting vulnerability in phoenixframework phoenix_live_view allows an attacker to bypass URL scheme validation and execute JavaScript in a victim's browser session.</p><p>The <tt>Phoenix.LiveView.Utils.valid_destination!/2</tt> and <tt>Phoenix.LiveView.Utils.valid_live_navigation_destination!/2</tt> functions in <tt>lib/phoenix_live_view/utils.ex</tt> rely on an internal <tt>uri_scheme/1</tt> helper that only detects a scheme when the input's first byte is an ASCII letter. Inputs beginning with an ASCII control character or space fall through to a nil-returning clause, causing the URL to be treated as a safe relative path.</p><p>Standard browsers implement the WHATWG URL parser, which strips leading C0 control and space characters before parsing. As a result, an input such as <tt>&quot; javascript:alert(1)&quot;</tt> is passed unchanged into <tt>&lt;.link href={...}&gt;</tt> and, when clicked, is parsed by the browser as a <tt>javascript:</tt> URL that executes attacker-controlled script in the victim's session.</p><p>Applications that render user-supplied URLs (for example profile links, redirect targets, or external references) via <tt>&lt;.link href={...}&gt;</tt> are affected.</p><p>This issue affects phoenix_live_view: from 1.2.2 before 1.2.7.</p>"}],"value":"Cross-site scripting vulnerability in phoenixframework phoenix_live_view allows an attacker to bypass URL scheme validation and execute JavaScript in a victim's browser session.\n\nThe Phoenix.LiveView.Utils.valid_destination!/2 and Phoenix.LiveView.Utils.valid_live_navigation_destination!/2 functions in lib/phoenix_live_view/utils.ex rely on an internal uri_scheme/1 helper that only detects a scheme when the input's first byte is an ASCII letter. Inputs beginning with an ASCII control character or space fall through to a nil-returning clause, causing the URL to be treated as a safe relative path.\n\nStandard browsers implement the WHATWG URL parser, which strips leading C0 control and space characters before parsing. As a result, an input such as \" javascript:alert(1)\" is passed unchanged into <.link href={...}> and, when clicked, is parsed by the browser as a javascript: URL that executes attacker-controlled script in the victim's session.\n\nApplications that render user-supplied URLs (for example profile links, redirect targets, or external references) via <.link href={...}> are affected.\n\nThis issue affects phoenix_live_view: from 1.2.2 before 1.2.7."}],"impacts":[{"capecId":"CAPEC-63","descriptions":[{"lang":"en","value":"CAPEC-63 Cross-Site Scripting (XSS)"}]}],"metrics":[{"cvssV4_0":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-13T18:04:30.636Z","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF"},"references":[{"tags":["vendor-advisory","related"],"url":"https://github.com/phoenixframework/phoenix_live_view/security/advisories/GHSA-5cgh-g58j-m9cq"},{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-58228.html"},{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-58228"},{"tags":["patch"],"url":"https://github.com/phoenixframework/phoenix_live_view/commit/86165533e311469a1b62093fd182d9d874de8106"}],"source":{"discovery":"EXTERNAL"},"title":"Scheme validation bypass in Phoenix.LiveView.Utils leads to XSS via <.link>","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Strip leading ASCII control and space bytes (code points 0x00 through 0x20) from any untrusted URL before passing it to <tt>&lt;.link href={...}&gt;</tt>, or reject such inputs outright. This aligns application-level validation with the WHATWG URL parser used by browsers and prevents the scheme-detection bypass.</p>"}],"value":"Strip leading ASCII control and space bytes (code points 0x00 through 0x20) from any untrusted URL before passing it to <.link href={...}>, or reject such inputs outright. This aligns application-level validation with the WHATWG URL parser used by browsers and prevents the scheme-detection bypass."}],"x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","assignerShortName":"EEF","cveId":"CVE-2026-58228","datePublished":"2026-07-13T18:04:30.636Z","dateReserved":"2026-06-29T18:54:08.633Z","dateUpdated":"2026-07-13T18:04:30.636Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"}