EEF-CVE-2026-64941
- Source
- https://cna.erlef.org/osv/EEF-CVE-2026-64941.html
- Import Source
- https://cna.erlef.org/osv/EEF-CVE-2026-64941.json
- JSON Data
- https://api.osv.dev/v1/vulns/EEF-CVE-2026-64941
- Aliases
-
- CVE-2026-64941
- GHSA-36m4-rm57-3prf
- Published
- 2026-08-10T11:05:14.571Z
- Modified
- 2026-08-10T11:25:57.479900079Z
- Severity
-
- 2.1 (Low) CVSS_V4 - 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 CVSS Calculator
- Summary
- Open redirect in Phoenix.LiveView.validate_local_url!/2 via ASCII tab, LF and CR
- Details
-
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.
Workaround
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.
Configuration
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.
- Database specific
{ "cwe_ids": [ "CWE-601" ], "capec_ids": [ "CAPEC-3" ], "cpe_ids": [ "cpe:2.3:a:phoenixframework:phoenix_live_view:*:*:*:*:*:*:*:*" ] }- References
-
- https://github.com/phoenixframework/phoenix_live_view/security/advisories/GHSA-36m4-rm57-3prf
- https://cna.erlef.org/cves/CVE-2026-64941.html
- https://github.com/phoenixframework/phoenix_live_view/commit/0b8c733133466912f81adecaea72b6712370242e
- https://github.com/phoenixframework/phoenix_live_view/commit/1c164f83df0bb922dfff9c60d125da5b0cfd6619
- https://github.com/phoenixframework/phoenix_live_view/commit/2068b304d71907064b159b6bc60c5ad85a876ecf
- https://hex.pm/packages/phoenix_live_view
- Credits
-
-
- Eurico Nicacio - FINDER
-
- Steffen Deusch - REMEDIATION_DEVELOPER
-
- José Valim - REMEDIATION_REVIEWER
-
- Jonatan Männchen / EEF - ANALYST
-
Affected packages
Hex / phoenix_live_view
Package
- Name
- phoenix_live_view
- Purl
- pkg:hex/phoenix_live_view
Affected ranges
- Type
- SEMVER
- Events
-
Introduced0.5.0Fixed1.0.19
- Type
- SEMVER
- Events
-
Introduced1.1.0-rc.0Fixed1.1.33
- Type
- SEMVER
- Events
-
Introduced1.2.0-rc.0Fixed1.2.9