CVE-2026-64941
Open redirect in Phoenix.LiveView.validate_local_url!/2 via ASCII tab, LF and CR
Description
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.
INFO
Published Date :
Aug. 10, 2026, 12:17 p.m.
Last Modified :
Aug. 10, 2026, 12:17 p.m.
Remotely Exploit :
Yes !
Source :
6b3ad84c-e1a6-4bf7-a703-f496b71e49db
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | LOW | 6b3ad84c-e1a6-4bf7-a703-f496b71e49db | ||||
| CVSS 4.0 | LOW | 6b3ad84c-e1a6-4bf7-a703-f496b71e49db |
Solution
- Update phoenix_live_view to version 1.0.19 or later.
- Update phoenix_live_view to version 1.1.33 or later.
- Update phoenix_live_view to version 1.2.9 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64941.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64941 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64941
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64941 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64941 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'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"}]}] Added Description 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. Added CVSS V4.0 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 Added CWE CWE-601 Added Reference https://cna.erlef.org/cves/CVE-2026-64941.html Added Reference https://github.com/phoenixframework/phoenix_live_view/commit/0b8c733133466912f81adecaea72b6712370242e Added Reference https://github.com/phoenixframework/phoenix_live_view/commit/1c164f83df0bb922dfff9c60d125da5b0cfd6619 Added Reference https://github.com/phoenixframework/phoenix_live_view/commit/2068b304d71907064b159b6bc60c5ad85a876ecf Added Reference https://github.com/phoenixframework/phoenix_live_view/security/advisories/GHSA-36m4-rm57-3prf Added Reference https://osv.dev/vulnerability/EEF-CVE-2026-64941