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CVE-2026-64941
Published:August 10, 2026
Updated:September 01, 2026
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.
Affected Packages
https://github.com/phoenixframework/phoenix_live_view.git (GITHUB):
Affected version(s) >=v1.2.0 <v1.2.9
Fix Suggestion:
Update to version v1.2.9
https://github.com/phoenixframework/phoenix_live_view.git (GITHUB):
Affected version(s) >=v0.5.0 <v1.0.19
Fix Suggestion:
Update to version v1.0.19
https://github.com/phoenixframework/phoenix_live_view.git (GITHUB):
Affected version(s) >=v1.1.0 <v1.1.33
Fix Suggestion:
Update to version v1.1.33
phoenix_live_view (HEX):
Affected version(s) >=0.5.0 <1.0.19
Fix Suggestion:
Update to version 1.0.19
phoenix_live_view (HEX):
Affected version(s) >=1.1.0 <1.1.33
Fix Suggestion:
Update to version 1.1.33
phoenix_live_view (HEX):
Affected version(s) >=1.2.0 <1.2.9
Fix Suggestion:
Update to version 1.2.9
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CVSS v4
Base Score:
2.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
URL Redirection to Untrusted Site ('Open Redirect')
EPSS
Base Score:
0.34