CVE-2026-123865 (GCVE-0-2026-123865)

Vulnerability from cvelistv5 – Published: 2026-11-11 18:19 – Updated: 2026-11-11 18:19
VLAI
Title
Node.js is vulnerable to an HTTP/2 memory and file-descriptor leak via a protocol error during session shutdown
Summary
An unauthenticated HTTP/2 client can permanently leak Node.js server memory and file descriptors. If a peer triggers a protocol error, for example an oversized frame header, while the session is already shutting down, nghttp2 tears the session down internally but Node.js never notices, leaving a dangling session: the socket stays in CLOSE_WAIT and all of Node.js's HTTP/2 state for that connection is held in memory indefinitely, with no further cost to the attacker. The attacker can start the shutdown remotely by sending GOAWAY(NO_ERROR), so it is reliable against default HTTP/2 servers. It is an incomplete-fix case of CVE-2026-48937: that fix detected nghttp2 internal terminations by watching for GOAWAY sent while not shutting down, but missed terminations that arrive while the session is already shutting down. This vulnerability affects Node.js 26.x, 24.x, and 22.x.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
openjs CNA under the redhat root
CNA scorecard C 66/100 over 142 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
nodejs node Affected: 0.0.0 , < 22.23.5 (semver)
Affected: 23.0.0 , < 24.22.3 (semver)
Affected: 25.0.0 , < 26.13.1 (semver)
guessed Create a notification for this product.
Credits
pimterry mcollina aduh95
Show details on NVD website
To clipboard 

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