CVE-2026-32141
flatted: Unbounded recursion DoS in parse() revive phase
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.
INFO
Published Date :
March 12, 2026, 6:16 p.m.
Last Modified :
March 19, 2026, 9:07 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the flatted library to version 3.4.0.
- Ensure the application uses the updated library.
Public PoC/Exploit Available at Github
CVE-2026-32141 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-32141.
| URL | Resource |
|---|---|
| https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606 | Patch |
| https://github.com/WebReflection/flatted/pull/88 | Issue Tracking Patch |
| https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f | Exploit Patch Vendor Advisory |
| https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f | Exploit Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-32141 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-32141
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Cloud Database Manager
webapp dbeaver databases database cloud-database-manager cloud
Batchfile Shell Java HTML JavaScript TypeScript CSS Dockerfile SCSS EJS
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-32141 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-32141 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 19, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:webreflection:flatted:*:*:*:*:*:node.js:*:* versions up to (excluding) 3.4.0 Added Reference Type GitHub, Inc.: https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/WebReflection/flatted/pull/88 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f Types: Exploit, Patch, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f Types: Exploit, Patch, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 13, 2026
Action Type Old Value New Value Added Reference https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f -
New CVE Received by [email protected]
Mar. 12, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-674 Added Reference https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606 Added Reference https://github.com/WebReflection/flatted/pull/88 Added Reference https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f