{"action":"Upgrade devalue to 5.6.4 or later.","affected":[{"fixed":"5.6.4","introduced":"4.0.0"}],"component":"devalue","cve_ids":["CVE-2026-123567"],"ecosystem":"npm","epss":0.00237,"exploited":false,"fixed_versions":["5.6.4"],"ghsa_id":"GHSA-mwv9-gp5h-frr4","id":"tcs_01M5KG1ZBXZ0PAH5RR0226DJMG","modified_at":"2026-11-08T10:56:14.491676861Z","published_at":"2026-03-12T16:38:15Z","references":["https://osv.dev/vulnerability/GHSA-mwv9-gp5h-frr4","https://github.com/sveltejs/devalue/security/advisories/GHSA-mwv9-gp5h-frr4","https://github.com/sveltejs/devalue/commit/87c1f3ce3759765a061cfe34843ecc4b0711ba8d","https://github.com/sveltejs/devalue","https://github.com/sveltejs/devalue/releases/tag/v5.6.4"],"severity":{"label":"low"},"sources":[{"source":"osv","source_id":"GHSA-mwv9-gp5h-frr4","url":"https://osv.dev/vulnerability/GHSA-mwv9-gp5h-frr4"}],"summary":"Sveltejs devalue's `devalue.parse` and `devalue.unflatten` emit objects with `__proto__` own properties"}