Bug 2511089 (CVE-2026-56848) - CVE-2026-56848 nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service
Summary: CVE-2026-56848 nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can le...
Keywords:
Status: NEW
Alias: CVE-2026-56848
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2512447 2512448
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-04 17:01 UTC by OSIDB Bzimport
Modified: 2026-08-07 09:56 UTC (History)
5 users (show)

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-08-04 17:01:22 UTC 
A flaw in Node.js HTTP/2 handling allows `nghttp2_session_mem_send()` to be called re-entrantly while `nghttp2_session_mem_recv()` is executing, resulting in a heap-use-after-free.

This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
Note You need to log in before you can comment on or make changes to this bug.