CVE-2024-27983
high-risk
Published 2024-04-09
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.
Do I need to act?
!
75.9% chance of exploitation in next 30 days
EPSS score — higher than 24% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.2/10
High
NETWORK
/ LOW complexity
References (12)
53
/ 100
high-risk
Severity
28/34 · Critical
Exploitability
20/34 · Moderate
Exposure
5/34 · Minimal