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    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:Apr 3, 2024
    Last Modified:Apr 15, 2026
    EPS:Apr 9, 2024
    EPSS Score:0.75933
    CVSS Score:7.5

    Affected Products

    Vendor
    Nodejs
    Product
    Nodejs
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Software Collections
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    https://github.com/lirantal/CVE-2024-27983-nodejs-http2

    Related CVEs

    CVE-2026-48932 (CVSS 3.7) — A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that …
    CVE-2026-56848 (CVSS 7.5) — A flaw in Node.js HTTP/2 handling allows `nghttp2_session_mem_send()` to be called re-entrantly while `nghttp2…
    CVE-2026-58042 (CVSS 5.9) — A flaw in Node.js can cause dns.resolveAny() Aborts the Node.js Process When a DNS Response Contains More Than…
    CVE-2026-58044 (CVSS 3.7) — A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that …
    CVE-2026-58045 (CVSS 6.2) — A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchrono…
    CVE-2026-58041 (CVSS 5.3) — A flaw in Node.js node:sqlite allows a stale StatementSyncIterator created through DatabaseSync#createTagStore…
    CVE-2026-56846 (CVSS 7.5) — A flaw in Node.js HTTP/2 handling can cause HTTP/2 retained header blocks evade maxSessionMemory and enable re…
    CVE-2026-58039 (CVSS 3.3) — A flaw in Node.js Permission Model enforcement allows process.report writes (and overwrites) files outside --a…
    CVE-2026-56847 (CVSS 6.1) — A flaw in Node.js Permission Model enforcement allows `trace_events.createTracing().enable()` Writes Trace Log…
    CVE-2026-56850 (CVSS 4.4) — A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS …

    References

    http://www.openwall.com/lists/oss-security/2024/04/03/16
    https://hackerone.com/reports/2319584
    https://lists.fedoraproject.org/archives/list/[email protected]/message/JDECX4BYZLMM4S4LALN4DPZ2HUTTPLKE/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/YDVFUH7ACZPYB3BS4SVILNOY7NQU73VW/
    https://security.netapp.com/advisory/ntap-20240510-0002/
    http://www.openwall.com/lists/oss-security/2024/04/03/16
    https://hackerone.com/reports/2319584
    https://lists.debian.org/debian-lts-announce/2024/09/msg00029.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/JDECX4BYZLMM4S4LALN4DPZ2HUTTPLKE/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/YDVFUH7ACZPYB3BS4SVILNOY7NQU73VW/
    https://security.netapp.com/advisory/ntap-20240510-0002/
    https://www.kb.cert.org/vuls/id/421644

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High