@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...

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...

@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...

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

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...

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...

@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

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 (...

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...

@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, <=0.6.9) +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, =0.11.0, =0.13.0, =0.8.0, =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...

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-2026-56811

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-2026-56811 Phoenix transports do not limit channel joins per connection, enabling process-exhaustion denial of service

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-2026-56811 Phoenix transports do not limit channel joins per connection, enabling process-exhaustion denial of service

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...

EEF-CVE-2026-56811 Phoenix transports do not limit channel joins per connection, enabling process-exhaustion denial of service

Summary 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...

CVE-2026-56811

The CVE-2026-56811 issue affects the Phoenix framework (Phoenix.Socket) where transports (WebSocket/LongPoll) allow an unbounded number of channel joins per transport, enabling a single unauthenticated client to exhaust BEAM processes and cause a denial-of-service across the node. Root cause is l...