Is CVE-2026-56669 actively exploited?

No active exploitation of CVE-2026-56669 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-56669 be exploited remotely?

Yes. CVE-2026-56669 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-56669?

CVE-2026-56669 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-56669

HIGH

CVE-2026-56669

CWE-407Published: July 8, 2026· Updated: Jul 10, 2026

7.5

CVSS v3.1

EPSS:0.36%probability of exploitation in 30 daysPercentile:27.9th

Official Description

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to 1.4.29, Elysia uses getAll in form data normalization for multipart/form-data endpoints, causing the amount of work to grow quadratically with the number of unique key-value pairs and allowing CPU exhaustion. This issue is fixed in version 1.4.29.

NVD Source

Technical Analysis

CVE-2026-56669 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.