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CVE-2026-32141

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/12/2026

Last Modified3/19/2026

Sourcenvd

Honeypot Sightings0

Affected Products

webreflection:flatted

Weaknesses (CWE)

CWE-674

References

https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606(security-advisories@github.com)

https://github.com/WebReflection/flatted/pull/88(security-advisories@github.com)

https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f(security-advisories@github.com)

https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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