---
title: "CVE-2025-13158: apidoc-core has a prototype pollution vulnerability"
url: https://erroneo.us/security/cve/CVE-2025-13158/
description: "CVE-2025-13158 (apidoc-core (npm)): Prototype pollution vulnerability in apidoc-core versions 0.2.0 and all subsequent versions allows remote attackers to…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-12-26
date_modified: 2025-12-26
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-13158"
kev: false
cvss: 9.3
epss: 0.00503
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-13158: apidoc-core has a prototype pollution vulnerability

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.5% , percentile 42: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 42% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes apidoc-core (npm) >= 0.2.0, <= 0.15.0, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

Prototype pollution vulnerability in apidoc-core versions 0.2.0 and all subsequent versions allows remote attackers to modify JavaScript object prototypes via malformed data structures, including the “define” property processed by the application, potentially leading to denial of service or unintended behavior in applications relying on the integrity of prototype chains. This affects the preProcess() function in apigroup.js, apiparamtitle.js, apiuse.js, and apipermission.js worker modules.

## Affected packages

- npm `apidoc-core` >= 0.2.0, <= 0.15.0 → fixed: none listed

## Affected products (CVE record)

- apiDoc apidoc-core: 0.2.0 < *

## Severity

- Sonatype CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.50% probability of exploitation activity in the next 30 days; percentile 42.

## Sources

- [GitHub Advisory GHSA-6vj3-p34w-xxjp](https://github.com/advisories/GHSA-6vj3-p34w-xxjp)
- [CVE.org record CVE-2025-13158](https://www.cve.org/CVERecord?id=CVE-2025-13158)
- [NVD entry CVE-2025-13158](https://nvd.nist.gov/vuln/detail/CVE-2025-13158)
- [sonatype.com](https://www.sonatype.com/security-advisories/cve-2025-13158)

---
Source page: https://erroneo.us/security/cve/CVE-2025-13158/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt