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.

Published: 2024-04-09 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-27983 is rated High Risk (72.7/100): CVSS High severity, with high exploitation likelihood (EPSS 87.21%, 100th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +11.28% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-27983

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 75.93% 87.21% +11.28%
2 2026-04-01 76.27% 75.93% -0.34%
3 2026-03-21 — 76.27% —

Full EPSS history (70 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-27983

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.2 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 4.2 [email protected]

Weakness enumeration for CVE-2024-27983

OS Trackers for CVE-2024-27983

vendor priority summary link
alpine — CVE-2024-27983: 2 source package rows (nodejs, nodejs-current); 12 state rows across 12 repos (3.17-main, 3.18-main, 3.19-community, 3.19-main, 3.20-community, 3.20-main, 3.21-community, 3.21-main, 3.22-community, 3.22-main, edge-community, edge-main); fixed 12, open 0. https://security.alpinelinux.org/vuln/CVE-2024-27983
debian not yet assigned CVE-2024-27983 not yet assigned priority: Debian including 1 source packages (nodejs), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2024-27983
gentoo high CVE-2024-27983: 1 GLSA(s) (202505-11), 1 atom(s) (net-libs/nodejs); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2024-27983
redhat high — https://access.redhat.com/security/cve/CVE-2024-27983
suse high CVE-2024-27983 severity important: SUSE including 96 source package names (18-17.2:nodejs18-18.20.1-150400.9.21.3, 18-17.2:npm18-18.20.1-150400.9.21.3, …), 286 product×package rows across 28 product lines (Container bci/nodejs, SUSE Enterprise Storage 7.1, … (28 product lines)): Fixed 215, Known Not Affected 71. https://www.suse.com/security/cve/CVE-2024-27983/
ubuntu medium CVE-2024-27983 medium priority: Ubuntu including 1 source packages (nodejs), 11 status rows across 11 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 6, needed 3, ignored 1, released 1. https://ubuntu.com/security/CVE-2024-27983

Affected software / configurations for CVE-2024-27983

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2024-27983

cvelogic Threat Intelligence