CVE-2026-32141
flatted: Unbounded recursion DoS in parse() revive phase
- State
- Published
- Severity
- 7.5 High
- Published
- Mar 12, 2026
- Updated
- Sep 4, 2026
- Reserved
- Mar 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
flattedWebReflection |
|
References
- https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f
- https://github.com/WebReflection/flatted/pull/88
- https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606
- https://access.redhat.com/security/cve/CVE-2026-32141vdb-entry
- RHBZ#2447083issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32141.json
- https://access.redhat.com/errata/RHSA-2026:34342vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:9742vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:13826vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36651vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:40945vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:40118vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5807vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:21772vendor-advisory
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