# CVE-2026-24006: Seroval denial of service via deeply nested objects

Source: https://junglewise.ai/threats/cve-2026-24006-lxsmnsyc-seroval-denial-of-service-via-deeply-nested-objects  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-01-22. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-24006 · Severity: low · CVSS 3.1 · Published 2026-01-22

Seroval is a JavaScript serialization library used to convert complex data structures into strings. An attacker can cause the application to crash by sending specially crafted data with extreme object nesting depth, which exhausts the call stack and makes the service unavailable. This is a network-based denial-of-service vulnerability that requires no authentication or user interaction.

Technologies: [seroval (npm)](https://junglewise.ai/threats/technologies/seroval). Vendors: [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-24006 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-24006 being exploited in the wild.

**How severe is CVE-2026-24006?** Low severity, with a CVSS score of 3.1, published 22 January 2026.

**Which products and versions are affected?** seroval (npm) SEMVER:introduced=0,fixed=1.4.1.

**Is there a fix for CVE-2026-24006?** Yes. seroval (npm): upgrade to 1.4.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-24006 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-24006?** Check whether you run seroval (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- seroval (npm): upgrade to 1.4.1 or later

  ```sh
  npm install seroval@1.4.1
  ```


## Technical details

This is a stack exhaustion vulnerability (CWE-770) in Seroval's serialization/deserialization mechanism. When processing objects with extreme nesting depth, the recursive serialization logic exceeds the JavaScript call stack limit, causing a denial of service. The vulnerability affects all versions prior to 1.4.1. The attack is network-accessible and requires no privileges or user interaction—any external input passed to Seroval's serialization methods can trigger the crash. The fix introduces a configurable depthLimit parameter that throws an error when the nesting depth threshold is reached, preventing stack exhaustion. Patch is available in version 1.4.1 and later.

## Affected products

- lxsmnsyc seroval <=1.4.0

## Identifiers

- CVE-2026-24006
- GHSA-3j22-8qj3-26mx

## Timeline

- 2026-01-22: disclosed: Advisory published
- 2026-01-21: patched: Fix released in version 1.4.1

## References

- [https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-3j22-8qj3-26mx](https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-3j22-8qj3-26mx)
- [https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060](https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060)
- [https://github.com/lxsmnsyc/seroval](https://github.com/lxsmnsyc/seroval)

## Related threats

- [Seroval denial of service via array-like object in deserialization](https://junglewise.ai/threats/cve-2026-116584-seroval-facilitates-javascript-value-stringification-including)
- [Seroval typed array constructor name injection](https://junglewise.ai/threats/cve-2026-116583-seroval-facilitates-javascript-value-stringification-including)
- [Seroval JavaScript RegExp code injection in HTML script elements](https://junglewise.ai/threats/cve-2026-116582-seroval-facilitates-javascript-value-stringification-including)
- [Seroval improper sequence node validation in deserialization](https://junglewise.ai/threats/cve-2026-116581-seroval-facilitates-javascript-value-stringification-including)
- [Seroval incomplete fix for AsyncIterator deserialization bypass](https://junglewise.ai/threats/cve-2026-116580-seroval-facilitates-javascript-value-stringification-including)