Bug 2453161 (CVE-2026-21714) - CVE-2026-21714 Node.js: Node.js: Memory leak and Denial of Service via crafted HTTP/2 WINDOW_UPDATE frames
Summary: CVE-2026-21714 Node.js: Node.js: Memory leak and Denial of Service via crafte...
Keywords:
Status: NEW
Alias: CVE-2026-21714
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2453567 2453568 2453569
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-30 20:02 UTC by OSIDB Bzimport
Modified: 2026-04-13 02:47 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:7350 0 None None None 2026-04-09 20:20:35 UTC
Red Hat Product Errata RHSA-2026:7670 0 None None None 2026-04-13 02:47:52 UTC
Red Hat Product Errata RHSA-2026:7675 0 None None None 2026-04-13 02:23:23 UTC

Description OSIDB Bzimport 2026-03-30 20:02:29 UTC 
A memory leak occurs in Node.js HTTP/2 servers when a client sends WINDOW_UPDATE frames on stream 0 (connection-level) that cause the flow control window to exceed the maximum value of 2³¹-1. The server correctly sends a GOAWAY frame, but the Http2Session object is never cleaned up.

This vulnerability affects HTTP2 users on Node.js 20, 22, 24 and 25.
Comment 2 errata-xmlrpc 2026-04-09 20:20:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:7350 https://access.redhat.com/errata/RHSA-2026:7350
Comment 3 errata-xmlrpc 2026-04-13 02:23:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:7675 https://access.redhat.com/errata/RHSA-2026:7675
Comment 4 errata-xmlrpc 2026-04-13 02:47:51 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:7670 https://access.redhat.com/errata/RHSA-2026:7670
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