7.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2026-24006

CVE-2026-24006: Seroval affected by Denial of Service via Deeply Nested Objects

Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, serialization of objects with extreme depth can exceed the maximum call stack limit. In version 1.4.1, Seroval introduces a depthLimit parameter in serialization/deserialization methods. An error will be thrown if the depth limit is reached.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2026-24006

CVE-2026-24006:

7.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
seroval	npm	<= 1.4.0	1.4.1

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability lies in the recursive nature of the serialization and deserialization processes in the seroval library. When handling deeply nested objects, the recursive function calls could exceed the maximum call stack size, leading to a Denial of Service. The patch addresses this by introducing a depthLimit in the options for both serialization and deserialization. The core recursive functions (parseSOS, parseAsync, and deserialize) were modified to track the current recursion depth and throw an error if the limit is exceeded. The evidence is clear in the diffs for packages/seroval/src/core/context/sync-parser.ts, packages/seroval/src/core/context/async-parser.ts, and packages/seroval/src/core/context/deserializer.ts, where a depth parameter is added to the main recursive functions and a check against depthLimit is performed at the beginning of each call.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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