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

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-56812 · Microsoft / collected KEV context

EUVD-2026-42050

GHSA-63mc-hw7g-86rr

EEF-CVE-2026-56812

cve-program · CVE-2026-56812

• https://github.com/phoenixframework/phoenix/security/advisories/GHSA-63mc-hw7g-86rr
• https://cna.erlef.org/cves/CVE-2026-56812.html
• https://osv.dev/vulnerability/EEF-CVE-2026-56812
• https://github.com/phoenixframework/phoenix/commit/2270aaf21bd02c6a6a1022820564efb605a97655
• https://github.com/phoenixframework/phoenix/commit/7f7b971c1ea0994e3fbd1c11ddb05e780bd38ad8
• https://github.com/phoenixframework/phoenix/commit/89a1c4be161e436241e12b2378a719904b9bd96f
• https://github.com/phoenixframework/phoenix/commit/b90b22521465ece00eb5a19d5aa2b9465b209c85
• https://github.com/phoenixframework/phoenix/commit/beffc4da1e787e572121f68902c63daf4fe7d9c2

euvd · EUVD-2026-42050

• https://github.com/phoenixframework/phoenix/security/advisories/GHSA-63mc-hw7g-86rr
• https://cna.erlef.org/cves/CVE-2026-56812.html
• https://osv.dev/vulnerability/EEF-CVE-2026-56812
• https://github.com/phoenixframework/phoenix/commit/2270aaf21bd02c6a6a1022820564efb605a97655
• https://github.com/phoenixframework/phoenix/commit/7f7b971c1ea0994e3fbd1c11ddb05e780bd38ad8
• https://github.com/phoenixframework/phoenix/commit/89a1c4be161e436241e12b2378a719904b9bd96f
• https://github.com/phoenixframework/phoenix/commit/b90b22521465ece00eb5a19d5aa2b9465b209c85
• https://github.com/phoenixframework/phoenix/commit/beffc4da1e787e572121f68902c63daf4fe7d9c2

nvd · CVE-2026-56812

• https://cna.erlef.org/cves/CVE-2026-56812.html
• https://github.com/phoenixframework/phoenix/commit/2270aaf21bd02c6a6a1022820564efb605a97655
• https://github.com/phoenixframework/phoenix/commit/7f7b971c1ea0994e3fbd1c11ddb05e780bd38ad8
• https://github.com/phoenixframework/phoenix/commit/89a1c4be161e436241e12b2378a719904b9bd96f
• https://github.com/phoenixframework/phoenix/commit/b90b22521465ece00eb5a19d5aa2b9465b209c85
• https://github.com/phoenixframework/phoenix/commit/beffc4da1e787e572121f68902c63daf4fe7d9c2
• https://github.com/phoenixframework/phoenix/security/advisories/GHSA-63mc-hw7g-86rr
• https://osv.dev/vulnerability/EEF-CVE-2026-56812

osv · EEF-CVE-2026-56812

• https://github.com/phoenixframework/phoenix/security/advisories/GHSA-63mc-hw7g-86rr
• https://cna.erlef.org/cves/CVE-2026-56812.html
• https://github.com/phoenixframework/phoenix/commit/2270aaf21bd02c6a6a1022820564efb605a97655
• https://github.com/phoenixframework/phoenix/commit/7f7b971c1ea0994e3fbd1c11ddb05e780bd38ad8
• https://github.com/phoenixframework/phoenix/commit/89a1c4be161e436241e12b2378a719904b9bd96f
• https://github.com/phoenixframework/phoenix/commit/b90b22521465ece00eb5a19d5aa2b9465b209c85
• https://github.com/phoenixframework/phoenix/commit/beffc4da1e787e572121f68902c63daf4fe7d9c2
• https://hex.pm/packages/phoenix
• https://www.npmjs.com/package/phoenix

osv · GHSA-63mc-hw7g-86rr

• https://github.com/phoenixframework/phoenix/security/advisories/GHSA-63mc-hw7g-86rr
• https://nvd.nist.gov/vuln/detail/CVE-2026-56812
• https://github.com/phoenixframework/phoenix/commit/7f7b971c1ea0994e3fbd1c11ddb05e780bd38ad8
• https://github.com/phoenixframework/phoenix/commit/89a1c4be161e436241e12b2378a719904b9bd96f
• https://github.com/phoenixframework/phoenix/commit/b90b22521465ece00eb5a19d5aa2b9465b209c85
• https://github.com/phoenixframework/phoenix/commit/beffc4da1e787e572121f68902c63daf4fe7d9c2
• https://cna.erlef.org/cves/CVE-2026-56812.html
• https://github.com/phoenixframework/phoenix
• https://osv.dev/vulnerability/EEF-CVE-2026-56812

No related operational record is retained in the current change model.