UpHeron
All vulnerabilities

Servers and applications

CVE-2019-9517

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending…

Severity
High 7.5
Published
13 Aug 2019
Last changed
17 Jun 2026
Added to UpHeron
17 Oct 2026
Fixed in
2.4.40, 8.16.1, 10.16.3, 12.8.1
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • From 2.4.20 before 2.4.40
Node.jsServers and applications · cpe:a:nodejs:node.js
  • From 8.0.0 up to 8.8.1
  • From 8.9.0 before 8.16.1
  • From 10.0.0 up to 10.12.0
  • From 10.13.0 before 10.16.3
  • From 12.0.0 before 12.8.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-9517
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-9517