CVE-2026-32141
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.8%
54.9th percentile
CISA KEV
Not listed
Weakness / dates
CWE-770
Published 2026-03-12 · modified 2026-09-04
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | H | High |
Timeline
- 2026-03-12 — Published (NVD)
- 2026-09-04 — Last modified (NVD)
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.
Affected
References
- https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606
- https://github.com/WebReflection/flatted/pull/88
- exploit https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f
- https://access.redhat.com/errata/RHSA-2026:13826
- https://access.redhat.com/errata/RHSA-2026:21772
- https://access.redhat.com/errata/RHSA-2026:34342
- https://access.redhat.com/errata/RHSA-2026:36651
- https://access.redhat.com/errata/RHSA-2026:40118
- https://access.redhat.com/errata/RHSA-2026:40945
- https://access.redhat.com/errata/RHSA-2026:5807
- https://access.redhat.com/errata/RHSA-2026:9742
- https://access.redhat.com/security/cve/CVE-2026-32141
- https://bugzilla.redhat.com/show_bug.cgi?id=2447083
- exploit https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32141.json