7.5

CVE-2026-21710

Medienbericht
A flaw in Node.js HTTP request handling causes an uncaught `TypeError` when a request is received with a header named `__proto__` and the application accesses `req.headersDistinct`.

When this occurs, `dest["__proto__"]` resolves to `Object.prototype` rather than `undefined`, causing `.push()` to be called on a non-array. This exception is thrown synchronously inside a property getter and cannot be intercepted by `error` event listeners, meaning it cannot be handled without wrapping every `req.headersDistinct` access in a `try/catch`.

* This vulnerability affects all Node.js HTTP servers on **20.x, 22.x, 24.x, and v25.x**
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nodejs ≫ Node.Js SwEdition- Version <= 20.20.1
Nodejs ≫ Node.Js SwEdition- Version >= 22.0.0 <= 22.22.1
Nodejs ≫ Node.Js SwEdition- Version >= 24.0.0 <= 24.14.0
Nodejs ≫ Node.Js SwEdition- Version >= 25.0.0 <= 25.8.1
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version9.0
Redhat ≫ Enterprise Linux Version10.0
Redhat ≫ Enterprise Linux Eus Version9.4
Redhat ≫ Enterprise Linux Eus Version9.6
Redhat ≫ Enterprise Linux Eus Version10.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 25.04% 0.977
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
HackerOne 7.5 3.9 3.6
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

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VulnDex Intel
Media Report
01.04.2026 09:30
https://nodejs.org/en/blog/vulnerability/march-2026-security-releases
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2453151
Issue Tracking
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21710.json
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7080
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7123
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7302
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7310
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7350
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7670
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7675
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7896
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:7983
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:8339
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:9711
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:9874
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-21710
Third Party Advisory