CVE-2026-8469
- Source
- https://cve.org/CVERecord?id=CVE-2026-8469
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8469.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-8469
- Aliases
- Published
- 2026-05-20T13:35:27.914Z
- Modified
- 2026-07-25T03:56:14.122137998Z
- Severity
-
- 8.2 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- Unauthenticated denial-of-service via BEAM atom table exhaustion in phoenix_storybook
- Details
-
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.toatom/1 without validation: 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handlesetvariationassign/3 interns every key of the psb-assign params map; 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handletogglevariationassign/3 interns the "attr" value from psb-toggle events; 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':tovariationid/2 interns elements of "variationid"; and 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':to_value/4 interns raw string values for attributes declared as :atom or :boolean. BEAM atoms are never garbage-collected, so each unique attacker-controlled string is a permanent allocation. Once the atom table ceiling (~1,048,576 atoms) is reached, the entire BEAM node aborts, taking down all applications running on it.
This issue affects phoenix_storybook from 0.2.0 before 1.1.0.
- Database specific
{ "cna_assigner": "EEF", "cwe_ids": [ "CWE-770" ], "unresolved_ranges": [ { "extracted_events": [ { "introduced": "0228669d55c23a754d1ef11f49a32121129d5395" }, { "fixed": "96d524690af0fe197a49f60d18e564a620b9ef81" } ], "source": "AFFECTED_FIELD" } ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8469.json" }- References
-
- https://cna.erlef.org/cves/CVE-2026-8469.html
- https://github.com
- https://osv.dev/vulnerability/EEF-CVE-2026-8469
- https://repo.hex.pm
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8469.json
- https://github.com/phenixdigital/phoenix_storybook/security/advisories/GHSA-833p-95jq-929q
- https://nvd.nist.gov/vuln/detail/CVE-2026-8469
- https://github.com/phenixdigital/phoenix_storybook/commit/96d524690af0fe197a49f60d18e564a620b9ef81
- https://github.com/phenixdigital/phoenix_storybook