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CVE-2026-8469

Allocation of Resources Without Limits or Throttling vulnerability in phenixdigital phoenix_storybook allows unauthenticated denial-of-service via BEAM atom table exhaustion. Multiple LiveView event handlers convert user-supplied event parameter strings to atoms using String.to_atom/1 without validation: 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handle_set_variation_assign/3 interns every key of the psb-assign params map; 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handle_toggle_variation
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:39c2c9615e52f5b9c95ffa0ab637355582d2bbb7f6927cde80070f72defbb8c4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:phenixdigital:phoenix_storybook:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["Elixir.PhoenixStorybook.ExtraAssignsHelpers","Elixir.PhoenixStorybook.Story.Playground"],"packageName":"phenixdigital/phoenix_storybook","packageURL":"pkg:github/phenixdigital/phoenix_storybook","product":"phoenix_storybook","programFiles":["lib/phoenix_storybook/helpers/extra_assigns_helpers.ex","lib/phx_live_storybook/live/entry_live.ex"],"programRoutines":[{"name":"'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handle_set_variation_assign/3"},{"n…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/affected/1

{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:phenixdigital:phoenix_storybook:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["Elixir.PhoenixStorybook.ExtraAssignsHelpers","Elixir.PhoenixStorybook.Story.Playground"],"packageName":"phoenix_storybook","packageURL":"pkg:hex/phoenix_storybook","product":"phoenix_storybook","programFiles":["lib/phoenix_storybook/helpers/extra_assigns_helpers.ex","lib/phx_live_storybook/live/entry_live.ex"],"programRoutines":[{"name":"'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handle_set_variation_assign/3"},{"name":"'Elixir.PhoenixStorybook…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:phenixdigital:phoenix_storybook:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["Elixir.PhoenixStorybook.ExtraAssignsHelpers","Elixir.PhoenixStorybook.Story.Playground"],"packageName":"phenixdigital/phoenix_storybook","packageURL":"pkg:github/phenixdigital/phoenix_storybook","product":"phoenix_storybook","programFiles":["lib/phoenix_storybook/helpers/extra_assigns_helpers.ex","lib/phx_live_storybook/live/entry_live.ex"],"programRoutines":[{"name":"'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handle_set_variation_assign/3"},{"n…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/affected/1
{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:phenixdigital:phoenix_storybook:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["Elixir.PhoenixStorybook.ExtraAssignsHelpers","Elixir.PhoenixStorybook.Story.Playground"],"packageName":"phoenix_storybook","packageURL":"pkg:hex/phoenix_storybook","product":"phoenix_storybook","programFiles":["lib/phoenix_storybook/helpers/extra_assigns_helpers.ex","lib/phx_live_storybook/live/entry_live.ex"],"programRoutines":[{"name":"'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handle_set_variation_assign/3"},{"name":"'Elixir.PhoenixStorybook…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-8469.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/phenixdigital/phoenix_storybook/commit/96d524690af0fe197a49f60d18e564a620b9ef81"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/references/3
{"tags":["vendor-advisory","related"],"url":"https://github.com/phenixdigital/phoenix_storybook/security/advisories/GHSA-833p-95jq-929q"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/phenixdigital/phoenix_storybook/security/advisories/GHSA-833p-95jq-929q"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/adp/0/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-8469"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:614ae8fbb663e52be0a23d64a48e4aeafeb564e24dd5ff3c74986f75368a417e · sha256:9477673e5bf9d44d… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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