CVE-2026-32141

HIGH EPSS 41.8%
Published Mar 12, 20263mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Mar 12, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
41.8% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-674

Affected Products 1

VendorProductVersionRange
webreflectionflatted* <3.4.0

References 3

  • github.com https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606
    Patch
  • github.com https://github.com/WebReflection/flatted/pull/88
    Issue TrackingPatch
  • github.com https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f
    ExploitPatchVendor Advisory

Remediation

  • github.com https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606
    Patch
  • github.com https://github.com/WebReflection/flatted/pull/88
    Issue TrackingPatch
  • github.com https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f
    ExploitPatchVendor Advisory