Bug 2512132

Summary:	CVE-2026-56846 nodejs24: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Srikanth Balasubramanian <sbalasub>
Component:	nodejs24	Assignee:	Jan Staněk <jstanek>
Status:	ON_QA ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	45	CC:	aradchen, jstanek, tjuhasz
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["89887aa3-6634-4f8a-89ae-a3708a4b3a57"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2510856

Description Srikanth Balasubramanian 2026-08-06 16:31:54 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw in Node.js HTTP/2 handling can cause HTTP/2 retained header blocks evade maxSessionMemory and enable remote memory exhaustion.

This vulnerability affects Node.js **24.x** and **22.x**.

Comment 1 Aoife Moloney 2026-08-17 15:48:46 UTC

This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.

Comment 2 Fedora Update System 2026-10-15 11:51:09 UTC

FEDORA-2026-5ca956d465 (nodejs24-24.21.0-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5ca956d465

Comment 3 Fedora Update System 2026-10-16 20:57:16 UTC

FEDORA-2026-5ca956d465 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-5ca956d465`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5ca956d465

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-10-16 21:31:30 UTC

FEDORA-2026-cb979e22de has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-cb979e22de`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-cb979e22de

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.