CVE-2026-42570

Published: Giu 09, 2026 Last Modified: Giu 11, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From version 5.6.3 to before version 5.8.1, devalue.parse could, due to quirks in some JavaScript engines, be convinced to allocate much more memory than was needed when deserializing sparse arrays, leading to excessive memory consumption. This issue has been patched in version 5.8.1.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0004
Percentile
0,1th
Updated

EPSS Score Trend (Last 5 Days)

770

Allocation of Resources Without Limits or Throttling

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
Application

Devalue by Svelte

Product Information
Vendor Svelte
Product Devalue
Version Range Affected
From 5.6.3 (inclusive)
To 5.8.1 (exclusive)
cpe:2.3:a:svelte:devalue:*:*:*:*:*:node.js:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/sveltejs/devalue/commit/206ca6712fbc380a…
https://github.com/sveltejs/devalue/commit/206ca6712fbc380a4571c59de9ab04b91110…
https://github.com/sveltejs/devalue/releases/tag/v5.8.1
https://github.com/sveltejs/devalue/releases/tag/v5.8.1
https://github.com/sveltejs/devalue/security/advisories/GHS…
https://github.com/sveltejs/devalue/security/advisories/GHSA-77vg-94rm-hx3p