EEF-CVE-2026-58228 Scheme validation bypass in Phoenix.LiveView.Utils leads to XSS via <.link>

Summary Cross-site scripting vulnerability in phoenixframework phoenix\live\view allows an attacker to bypass URL scheme validation and execute JavaScript in a victim's browser session. The Phoenix.LiveView.Utils.valid\destination!/2 and Phoenix.LiveView.Utils.valid\live\navigation\destination!/2...

CVE-2026-58228 Scheme validation bypass in Phoenix.LiveView.Utils leads to XSS via <.link>

Cross-site scripting vulnerability in phoenixframework phoenixliveview allows an attacker to bypass URL scheme validation and execute JavaScript in a victim's browser session. The Phoenix.LiveView.Utils.validdestination!/2 and Phoenix.LiveView.Utils.validlivenavigationdestination!/2 functions in...

@abtnode/analytics (>=1.16.13-beta-0086a35d, <=1.17.13-beta-20260613-094425-b81920c8), @abtnode/auth (>=1.3.13, <=1.17.13-beta-20260613-094425-b81920c8) +212 more potentially affected by CVE-2026-56812 via phoenix (>=1.7.2, <=1.7.21)

phoenix NPM version =1.7.2, =1.16.13-beta-0086a35d, =1.3.13, =1.1.12, =1.6.23, =1.16.6-beta-08670107, =1.0.0, =1.16.33-beta-20241105-141729-e4608175, =1.0.0, =1.0.35, =1.16.33-beta-20241105-141729-e4608175, =1.0.2, =1.16.33-beta-20241105-141729-e4608175, =1.16.33-beta-20241105-141729-e4608175,...

Improper Check for Unusual or Exceptional Conditions

Overview org.webjars.npm:phoenix is a The official JavaScript client for the Phoenix web framework. Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions via the syncState and syncDiff presence reconciliation code in assets/js/phoenix/presence.js...

@absinthe/graphql-playground (>=1.3.1, <=1.3.5), @absinthe/socket (>=0.1.0, <=0.2.0) +52 more potentially affected by CVE-2026-56812 via phoenix (>=1.3.0, <=1.5.12)

phoenix NPM version =1.3.0, =1.3.1, =0.1.0, =0.1.2, =0.1.0, =0.1.2, =1.7.5, =1.5.1, =1.7.5, =1.8.1, =1.0.0, =1.5.6, =1.8.1, =1.8.1, =1.7.26, =1.7.26, =1.16.6-beta-eaa4d39d and more Source cves: CVE-2026-56812 Source advisory: SNYK:JS-PHOENIX-17889828...

@knocklabs/client (>=0.21.6, <=0.22.1), @knocklabs/expo (>=0.5.0, <=0.8.1) +8 more potentially affected by CVE-2026-56812 via phoenix (>=1.8.0, <=1.8.7)

phoenix NPM version =1.8.0, =0.21.6, =0.5.0, =0.1.0, =0.1.1, =0.1.1, =0.0.2, =0.0.1, =0.0.2, =0.0.1, =2.1.8, =2.5.4 Source cves: CVE-2026-56812 Source advisory: SNYK:JS-PHOENIX-17889828...

@edgebrix-sdk/react (>=0.0.58, <=0.0.74), @kimia_software/tellair-wc (0.0.0) +16 more potentially affected by CVE-2026-56812 via phoenix (>=1.6.2, <=1.6.16)

phoenix NPM version =1.6.2, =0.0.58, =0.8.10, =0.1.8, =0.1.5, =0.1.0-rc0, =0.8.1, =0.0.1, =0.0.1, =0.0.0-PR-1--182e1d3, =19.0.0-beta.1, =1.0.23, =0.3.0, =0.1.1, =0.1.6 and more Source cves: CVE-2026-56812 Source advisory: SNYK:JS-PHOENIX-17889828...

Improper Check for Unusual or Exceptional Conditions

Overview phoenix is a The official JavaScript client for the Phoenix web framework. Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions via the syncState and syncDiff presence reconciliation code in assets/js/phoenix/presence.js. An attacker ca...

CVE-2026-56812

Improper Check for Unusual or Exceptional Conditions vulnerability in phoenixframework phoenix Presence JavaScript client allows an attacker with ordinary channel access to cause a persistent client-side denial of service against every viewer of a presence channel topic. This vulnerability is...

CVE-2026-56811

Allocation of Resources Without Limits or Throttling vulnerability in phoenixframework phoenix Phoenix.Socket module allows an unauthenticated attacker to cause a denial of service against any endpoint that mounts a Phoenix socket with a reachable channel transport WebSocket or LongPoll. This...

CVE-2026-56812 Phoenix JavaScript presence client crashes on presence keys colliding with Object.prototype members in Presence.syncState/syncDiff

Improper Check for Unusual or Exceptional Conditions vulnerability in phoenixframework phoenix Presence JavaScript client allows an attacker with ordinary channel access to cause a persistent client-side denial of service against every viewer of a presence channel topic. This vulnerability is...

CVE-2026-56812

Improper Check for Unusual or Exceptional Conditions vulnerability in phoenixframework phoenix Presence JavaScript client allows an attacker with ordinary channel access to cause a persistent client-side denial of service against every viewer of a presence channel topic. This vulnerability is...

CVE-2026-56812 Phoenix JavaScript presence client crashes on presence keys colliding with Object.prototype members in Presence.syncState/syncDiff

Improper Check for Unusual or Exceptional Conditions vulnerability in phoenixframework phoenix Presence JavaScript client allows an attacker with ordinary channel access to cause a persistent client-side denial of service against every viewer of a presence channel topic. This vulnerability is...

@edgebrix-sdk/react (>=0.0.58, <=0.0.74), @kimia_software/tellair-wc (0.0.0) +16 more potentially affected by CVE-2026-56812 via phoenix (>=1.6.2, <=1.6.16)

phoenix NPM version =1.6.2, =0.0.58, =0.8.10, =0.1.8, =0.1.5, =0.1.0-rc0, =0.8.1, =0.0.1, =0.0.1, =0.0.0-PR-1--182e1d3, =19.0.0-beta.1, =1.0.23, =0.3.0, =0.1.1, =0.1.6 and more Source cves: CVE-2026-56812 Source advisory: OSV:EEF-CVE-2026-56812...

EEF-CVE-2026-56812 Phoenix JavaScript presence client crashes on presence keys colliding with Object.prototype members in Presence.syncState/syncDiff

Summary Improper Check for Unusual or Exceptional Conditions vulnerability in phoenixframework phoenix Presence JavaScript client allows an attacker with ordinary channel access to cause a persistent client-side denial of service against every viewer of a presence channel topic. This vulnerabilit...

CVE-2026-56812

The Phoenix JavaScript presence client suffers a client-side denial of service due to an unsafe existence check in Presence.syncState() and Presence.syncDiff(). By using a bare truthiness test (state[key]) to detect existing presences, attacker-controlled keys that collide with Object.prototype (...

@abtnode/analytics (>=1.16.13-beta-0086a35d, <=1.17.13-beta-20260613-094425-b81920c8), @abtnode/auth (>=1.3.13, <=1.17.13-beta-20260613-094425-b81920c8) +212 more potentially affected by CVE-2026-56812 via phoenix (>=1.7.2, <=1.7.21)

phoenix NPM version =1.7.2, =1.16.13-beta-0086a35d, =1.3.13, =1.1.12, =1.6.23, =1.16.6-beta-08670107, =1.0.0, =1.16.33-beta-20241105-141729-e4608175, =1.0.0, =1.0.35, =1.16.33-beta-20241105-141729-e4608175, =1.0.2, =1.16.33-beta-20241105-141729-e4608175, =1.16.33-beta-20241105-141729-e4608175,...

CVE-2026-56812 Phoenix JavaScript presence client crashes on presence keys colliding with Object.prototype members in Presence.syncState/syncDiff

Improper Check for Unusual or Exceptional Conditions vulnerability in phoenixframework phoenix Presence JavaScript client allows an attacker with ordinary channel access to cause a persistent client-side denial of service against every viewer of a presence channel topic. This vulnerability is...

@absinthe/graphql-playground (>=1.3.1, <=1.3.5), @absinthe/socket (>=0.1.0, <=0.2.0) +52 more potentially affected by CVE-2026-56812 via phoenix (>=1.3.0, <=1.5.12)

phoenix NPM version =1.3.0, =1.3.1, =0.1.0, =0.1.2, =0.1.0, =0.1.2, =1.7.5, =1.5.1, =1.7.5, =1.8.1, =1.0.0, =1.5.6, =1.8.1, =1.8.1, =1.7.26, =1.7.26, =1.16.6-beta-eaa4d39d and more Source cves: CVE-2026-56812 Source advisory: OSV:EEF-CVE-2026-56812...

@knocklabs/client (>=0.21.6, <=0.22.1), @knocklabs/expo (>=0.5.0, <=0.8.1) +8 more potentially affected by CVE-2026-56812 via phoenix (>=1.8.0, <=1.8.7)

phoenix NPM version =1.8.0, =0.21.6, =0.5.0, =0.1.0, =0.1.1, =0.1.1, =0.0.2, =0.0.1, =0.0.2, =0.0.1, =2.1.8, =2.5.4 Source cves: CVE-2026-56812 Source advisory: OSV:EEF-CVE-2026-56812...