CVE-2026-32141 — Uncontrolled Recursion in Flatted

CWE-674 — Uncontrolled RecursionCWE-770 — Allocation of Resources Without Limits or Throttling9 documents8 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 96.79%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Webreflection FlattedDebian Node-flattedMsrc Azl3 Python-tensorboard 2.16.2-6 ON Azure Linux 3.0+1 more
Timeline
PublishedMar 12
Latest updateMar 13

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages5 packages

▶debiandebian/node-flatted< node-flatted 3.4.1~ds-1 (forky)

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
OSV
flatted vulnerable to unbounded recursion DoS in parse() revive phase↗2026-03-13
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GHSA
flatted vulnerable to unbounded recursion DoS in parse() revive phase↗2026-03-13
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OSV
CVE-2026-32141: flatted is a circular JSON parser↗2026-03-12
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📋Vendor Advisories

3
Red Hat
flatted: flatted: Unbounded recursion DoS in parse() revive phase↗2026-03-12
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Microsoft
flatted: Unbounded recursion DoS in parse() revive phase↗2026-03-10
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Debian
CVE-2026-32141: node-flatted - flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse() function us...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-32141 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

1
Bugzilla
CVE-2026-32141 flatted: flatted: Unbounded recursion DoS in parse() revive phase↗2026-03-12
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CVE-2026-32141 — Uncontrolled Recursion in Flatted | cvebase