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VulnerabilityCVE-2026-58044Published 2026-08-04

CVE-2026-58044 — nodejs node

low

As of 2026-08-04, CVE-2026-58044 is a LOW-severity vulnerability in nodejs node, CVSS v3.1 3.7, EPSS 0.2% (17.7th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-58044, 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)”.

CVSS v3.1
3.7/10Low
EPSS
0.2%Higher than 17.7% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
1Campaigns referencing it
Priority
2.6/10Threadlinqs triage score
Published
CVSS v3.1 3.7 (LOW) · EPSS 0.2% (higher than 17.7% of all scored CVEs) · Priority 2.6/10 · Published 2026-08-04

Last updated:

What is CVE-2026-58044?

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible `IncomingMessage` headers while piping the original body to a reused backend connection. Node.js can omit headers beyond `maxHeadersCount` / `maxHeaderPairs` from `req.headers`, `req.rawHeaders`, and `req.headersDistinct`, while still using those omitted headers internally for HTTP message framing. In particular, `Content-Length` can be hidden from userland while the request body is still delivered. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

The record classifies CVE-2026-58044 under weakness class CWE-444. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 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
3.7 — LOW
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS (FIRST)
0.2% probability of exploitation in the next 30 days, higher than 17.7% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
2.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-08-04

Is CVE-2026-58044 being exploited?

It currently carries a trending score of 23 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-58044

No vendor patch reference has been recorded for CVE-2026-58044 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-2026-58044

1 tracked threat in the Threadlinqs corpus references CVE-2026-58044, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on .

Other references