What is CVE-2024-27983?

CVE-2024-27983 is a high-severity vulnerability in Node.js Node, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.2/10. Published 2024-04-09.

How severe is CVE-2024-27983?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2024-27983 known to be exploited?

12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Node.js Node

CVE-2024-27983

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.

Vulnerability class: Race Condition

EPSS: 0.872 (99.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Nodejs Node — versions 4.0, 5.0, 6.0

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-27983?: CVE-2024-27983 is a high-severity vulnerability in Node.js Node, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.2/10. Published 2024-04-09.
How severe is CVE-2024-27983?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2024-27983 known to be exploited?: 12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.