{"id":"CVE-2026-32141","title":"flatted is a circular JSON parser","summary":"flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse() function uses a recursive revive() phase to resolve circular references in deserialized JSON. When given a crafted payload with deeply nested or self-referential $ indi…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-674","CWE-770"],"vendor":"webreflection","product":"flatted","affected":["flatted < 3.4.0"],"patched":["flatted 3.4.0"],"published":"2026-03-12","updated":"2026-07-02","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-32141","references":[{"url":"https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606","label":"security-advisories@github.com"},{"url":"https://github.com/WebReflection/flatted/pull/88","label":"security-advisories@github.com"},{"url":"https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f","label":"security-advisories@github.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:13826","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:21772","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:34342","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:5807","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:9742","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-32141","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2447083","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32141.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"tags":["nvd"],"epss":0.00807,"epssPercentile":0.55307,"ingestedAt":"2026-07-02T12:34:40.364Z","slug":"CVE-2026-32141","body":"## Overview\n\nflatted is a circular JSON parser. Prior to 3.4.0, flatted's parse() function uses a recursive revive() phase to resolve circular references in deserialized JSON. When given a crafted payload with deeply nested or self-referential $ indices, the recursion depth is unbounded, causing a stack overflow that crashes the Node.js process. This vulnerability is fixed in 3.4.0.\n\n## Affected\n\n- `flatted < 3.4.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `flatted 3.4.0`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}