CVE-2026-64941 (GCVE-0-2026-64941)
Vulnerability from cvelistv5
Published
2026-08-10 11:05
Modified
2026-08-10 13:00
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Summary
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.
redirect/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.
This 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.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| phoenixframework | phoenix_live_view |
Version: 0.5.0 ≤ Version: 1.1.0-rc.0 ≤ Version: 1.2.0-rc.0 ≤ cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:* |
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|
|||||||||
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Alternatively, map client-supplied navigation targets to a fixed set of known-good paths rather than forwarding the value.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eReject any untrusted value containing ASCII tab, LF or CR before passing it as \u003ccode\u003e:to\u003c/code\u003e to \u003ccode\u003eredirect/2\u003c/code\u003e, or to \u003ccode\u003epush_patch/2\u003c/code\u003e before 0.7.0. Alternatively, map client-supplied navigation targets to a fixed set of known-good paths rather than forwarding the value.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"Reject any untrusted value containing ASCII tab, LF or CR before passing it as `:to` to `redirect/2`, or to `push_patch/2` before 0.7.0. Alternatively, map client-supplied navigation targets to a fixed set of known-good paths rather than forwarding the value.\", \"base64\": false}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"URL Redirection to Untrusted Site (\u0027Open Redirect\u0027) vulnerability in phoenixframework phoenix_live_view allows an attacker to send a victim\u0027s browser to an origin of the attacker\u0027s 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 /\u003cTAB\u003e/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.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eURL Redirection to Untrusted Site (\u0027Open Redirect\u0027) vulnerability in phoenixframework phoenix_live_view allows an attacker to send a victim\u0027s browser to an origin of the attacker\u0027s choosing via a \u003ccode\u003e:to\u003c/code\u003e value containing ASCII tab, LF or CR.\u003c/p\u003e\\n\u003cp\u003e\u003ccode\u003eredirect/2\u003c/code\u003e validates \u003ccode\u003e:to\u003c/code\u003e through the private \u003ccode\u003evalidate_local_url!/2\u003c/code\u003e in \u003ccode\u003elib/phoenix_live_view.ex\u003c/code\u003e, which is intended to guarantee the target is a path within the application. It rejects a leading \u003ccode\u003e//\u003c/code\u003e and any backslash, but not ASCII tab, LF or CR. Browsers strip those three characters before parsing a URL, so a value such as \u003ccode\u003e/\u0026lt;TAB\u0026gt;/example.com\u003c/code\u003e passes validation as a path and is then resolved as the scheme-relative URL \u003ccode\u003e//example.com\u003c/code\u003e. The live navigation functions share the guard but are not affected, because the client expands their target against the current origin. \u003ccode\u003epush_patch/2\u003c/code\u003e is also affected before 0.7.0, which is when that expansion was added.\u003c/p\u003e\\n\u003cp\u003eThis 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.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"URL Redirection to Untrusted Site (\u0027Open Redirect\u0027) vulnerability in phoenixframework phoenix_live_view allows an attacker to send a victim\u0027s browser to an origin of the attacker\u0027s choosing via a `:to` value containing ASCII tab, LF or CR.\\n\\n`redirect/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 `/\u003cTAB\u003e/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.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-601\", \"description\": \"CWE-601 URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"The application must pass an externally influenced value as :to to redirect/2, or to push_patch/2 before 0.7.0, for example a return_to parameter carried through sign-in or a navigation target taken from a handle_event/3 payload.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eThe application must pass an externally influenced value as \u003ccode\u003e:to\u003c/code\u003e to \u003ccode\u003eredirect/2\u003c/code\u003e, or to \u003ccode\u003epush_patch/2\u003c/code\u003e before 0.7.0, for example a \u003ccode\u003ereturn_to\u003c/code\u003e parameter carried through sign-in or a navigation target taken from a \u003ccode\u003ehandle_event/3\u003c/code\u003e payload.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"The application must pass an externally influenced value as `:to` to `redirect/2`, or to `push_patch/2` before 0.7.0, for example a `return_to` parameter carried through sign-in or a navigation target taken from a `handle_event/3` payload.\", \"base64\": false}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"1.0.19\", \"versionStartIncluding\": \"0.5.0\"}, {\"criteria\": \"cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"1.1.33\", \"versionStartIncluding\": \"1.1.0-rc.0\"}, {\"criteria\": \"cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"1.2.9\", \"versionStartIncluding\": \"1.2.0-rc.0\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-08-10T11:05:14.571Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-64941\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-10T13:00:33.543Z\", \"dateReserved\": \"2026-08-09T16:30:01.572Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-08-10T11:05:14.571Z\", \"assignerShortName\": \"EEF\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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