CVE-2026-32141flatted is a circular JSON parser.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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 $ indices, the recursion depth is unbounded, causing a stack overflow that crashes the Node.js process. This vulnerability is fixed in 3.4.0.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-674, CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
webreflection flatted webreflection:flatted | before 3.4.0 | NVD |
References
- https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606patch
- https://github.com/WebReflection/flatted/pull/88issue-tracking, patch
- https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65fexploit, patch, vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:13826
- https://access.redhat.com/errata/RHSA-2026:21772
- https://access.redhat.com/errata/RHSA-2026:34342
- https://access.redhat.com/errata/RHSA-2026:36651
- https://access.redhat.com/errata/RHSA-2026:40118
- https://access.redhat.com/errata/RHSA-2026:40945
- https://access.redhat.com/errata/RHSA-2026:5807
- https://access.redhat.com/errata/RHSA-2026:9742
- https://access.redhat.com/security/cve/CVE-2026-32141
- https://bugzilla.redhat.com/show_bug.cgi?id=2447083
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32141.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.