UpHeron
All vulnerabilities

Servers and applications

CVE-2020-27223

In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.

Severity
Medium 5.3
Published
26 Feb 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.4.36
Sources
NVD

Affected software

SoftwareAffected versions
Apache SolrServers and applications · cpe:a:apache:solr
  • Version 8.8.1
Eclipse JettyServers and applications · cpe:a:eclipse:jetty
  • Version 11.0.0
  • Version 10.0.0
  • Version 9.4.36-20210114
  • Version 9.4.36
All 7 release lines
  • Version 9.4.6-20170531
  • Version 9.4.6-20180619
  • From 9.4.7 before 9.4.36
  • Version 9.4.36
  • Version 9.4.36-20210114
  • Version 10.0.0
  • Version 11.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-27223
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-27223