# CVE-2026-58043 — nodejs node

> As of 2026-07-31, CVE-2026-58043 is a HIGH-severity vulnerability in nodejs node, CVSS v3.1 7.5, EPSS 0.1% (3.3th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-58043, most recently “Node.js Patches 11 Security Flaws Across v22.23.2, v24.18.1, v26.5.1 (HTTP/2 DoS, Permission Model Bypass, TLS/mTLS Issues)”.

**Last updated:** 2026-07-31

## What is CVE-2026-58043?

A flaw in Node.js Permission Model enforcement can over-grant filesystem access across radix-tree prefix boundaries. Under `--permission`, an attacker who is granted access to one path can abuse boundary handling to read from or write to paths outside the intended filesystem allowlist. This vulnerability affects Node.js **main**, **22.x**, **24.x**, and **26.x**.

The record classifies CVE-2026-58043 under weakness class [CWE-284](https://intel.threadlinqs.com/cwe/CWE-284). Its CVSS v3 base vector states that the flaw requires local access to the host, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 67 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.5 — HIGH (`CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 3.3% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-30, last modified 2026-07-31

## Is CVE-2026-58043 being exploited?

No public exploitation evidence for CVE-2026-58043 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-07-31. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited.

## Affected products and versions

- [nodejs](https://intel.threadlinqs.com/vendors/nodejs): node

## How to fix CVE-2026-58043

No vendor patch reference has been recorded for CVE-2026-58043 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-58043

1 tracked threat in the Threadlinqs corpus references CVE-2026-58043, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Node.js Patches 11 Security Flaws Across v22.23.2, v24.18.1, v26.5.1 (HTTP/2 DoS, Permission Model Bypass, TLS/mTLS Issues)](https://intel.threadlinqs.com/threat/TL-2026-1807) — HIGH · 2026-08-01

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-08-01. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [nodejs.org](https://nodejs.org/en/blog/vulnerability/july-2026-security-releases)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-58043
Full detection coverage and IOCs for threats exploiting CVE-2026-58043 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp