UpHeron
All vulnerabilities

Servers and applications

CVE-2019-9511

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is…

Severity
High 7.5
Published
13 Aug 2019
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
1.16.1, 8.16.1, 10.16.3, 12.8.1
Sources
NVD

Affected software

SoftwareAffected versions
nginxServers and applications · cpe:a:f5:nginx
  • From 1.9.5 before 1.16.1
  • From 1.17.0 up to 1.17.2
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-2019-9511
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-9511