CVE-2026-64941

LowCVSS 2.1/10Last modified Oct 24, 2026

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.

Metrics

CVSS 4.0 2.1/10

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

Weakness enumeration

CWE-601

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
phoenixframework	phoenix_live_view	>= 0.5.0, < 1.0.19; >= 1.1.0-rc.0, < 1.1.33; >= 1.2.0-rc.0, < 1.2.9
phoenixframework	phoenix_live_view	>= b20dba3f65a380b2e4868dae03397f13d2daa070, < *

References

Timeline

Published: Aug 10, 2026
Last modified: Oct 24, 2026
NVD status: Awaiting Analysis

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