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CVE-2020-27223

61
FAUCET Score

CVE-2020-27223 is a denial-of-service (DoS) vulnerability in Eclipse Jetty versions 9.4.6.v20170531 through 9.4.36.v20210114, 10.0.0, and 11.0.0, also affecting products like Apache, Debian, NetApp, and Oracle. An attacker can trigger high CPU usage by sending a request with multiple Accept headers containing numerous "quality" parameters, leading to a DoS state. Rated Medium severity (CVSS 5.3), this vulnerability is network-exploitable with low attack complexity, requiring no user interaction or privileges, and primarily impacts availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.4.7, < 9.4.36CPE matchmatch criteria
cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
9.4.6CPE matchmatch criteria
cpe:2.3:a:eclipse:jetty:9.4.6:20170531:*:*:*:*:*:*
9.4.6CPE matchmatch criteria
cpe:2.3:a:eclipse:jetty:9.4.6:20180619:*:*:*:*:*:*
9.4.36CPE matchmatch criteria
cpe:2.3:a:eclipse:jetty:9.4.36:-:*:*:*:*:*:*
9.4.36CPE matchmatch criteria
cpe:2.3:a:eclipse:jetty:9.4.36:20210114:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.2MEDIUM

CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.5
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
77.95%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.7795 is in the 100th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (30)

mavenpatch availablevia ghsa
Product: org.eclipse.jetty:jetty-serverFixed in: 9.4.37
mavenpatch availablevia ghsa
Product: org.eclipse.jetty:jetty-serverFixed in: 10.0.1
mavenpatch availablevia ghsa
Product: org.eclipse.jetty:jetty-serverFixed in: 11.0.1
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Integration Camel Quarkus 2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-controller-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-log-reader-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-must-gather-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-operator-bundle:v1.4.6-5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-registry-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-rsync-transfer-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-ui-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-plugin-for-gcp-rhel8:v1.4.6-3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-plugin-for-microsoft-azure-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-restic-restore-helper-rhel8:v1.4.6-5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-rhel8:v1.4.6-5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-velero-plugin-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: jenkins-0:2.289.1.1624365627-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.5Fixed in: jenkins-0:2.277.3.1623846768-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.6Fixed in: jenkins-0:2.277.3.1623853726-1.el8
View patch
redhatpatch availablevia redhat_api
Product: RHAF Camel-K 1.8Fixed in: jetty
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-plugin-for-aws-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat AMQ 7.8.2Fixed in: jetty
View patch
redhatpatch availablevia redhat_api
Product: Red Hat AMQ 7.9.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.10Fixed in: jetty
View patch
redhatno patchvia redhat_api
Product: Red Hat Integration Camel Quarkus 1Fixed in: jetty
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: eclipse:rhel8/jetty
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-metering-hadoop
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-metering-hive
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-metering-presto

Vendor Advisories (2)

mavenGHSA-m394-8rww-3jr7medium

DOS vulnerability for Quoted Quality CSV headers

Mar 10, 2021
redhatCVE-2020-27223Moderate

jetty: request containing multiple Accept headers with a large number of "quality" parameters may lead to DoS

Feb 26, 2021

References

bugs.eclipse.org / bugs/show_bug.cgi
Vendor Advisory
github.com / eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7
Third Party Advisory
github.com / jetty/jetty.project/commit/10e531756b972162eed402c44d0244f7f6b85131
lists.apache.org / thread.html/r068dfd35ce2193f6af28b74ff29ab148c2b2cacb235995576f5bea78%40%3Cissues.solr.apache.org%3E
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security.netapp.com / advisory/ntap-20210401-0005
Third Party Advisory
debian.org / security/2021/dsa-4949
Third Party Advisory
oracle.com / security-alerts/cpuApr2021.html
PatchThird Party Advisory