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CVE-2024-27983

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CVE-2024-27983

Published: Apr 9, 2024

Modified: Nov 4, 2025

PUBLISHED

CVSS v3.0

8.2

HIGH

Description

An attacker can make the Node.js HTTP/2 server completely unavailable by sending a small amount of HTTP/2 frames packets with a few HTTP/2 frames inside. It is possible to leave some data in nghttp2 memory after reset when headers with HTTP/2 CONTINUATION frame are sent to the server and then a TCP connection is abruptly closed by the client triggering the Http2Session destructor while header frames are still being processed (and stored in memory) causing a race condition.

VendorProductVersions

NodeJS

Node

affected
4.0 - < 4.*
affected
5.0 - < 5.*
affected
6.0 - < 6.*
affected
7.0 - < 7.*
affected
8.0 - < 8.*

+13 more versions

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

High

References

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