`CVE-2020-27216` Eclipse Jetty

Affected software	Eclipse Jetty
Severity	7.0 High CVSS 3.1 2 scores
Fixed in	`9.4.33.v20201020`, `10.0.0.beta3`, `11.0.0.beta3`
Weakness	CWE-378
Published	23 Oct 2020
Updated	17 Jun 2026

Description

In Eclipse Jetty versions 1.0 thru 9.4.32.v20200930, 10.0.0.alpha1 thru 10.0.0.beta2, and 11.0.0.alpha1 thru 11.0.0.beta2O, on Unix like systems, the system's temporary directory is shared between all users on that system. A collocated user can observe the process of creating a temporary sub directory in the shared temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins the race then they will have read and write permission to the subdirectory used to unpack web applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of this temporary directory, this can lead to a local privilege escalation vulnerability.

CWE-379CWE-552

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment no assessment published
Indexed PoC none indexed
EPSS 4.4% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists: github/codeql #4473.

Protection none
Action unverified
Review automated Upstream data
Record active

Decided by	Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding	This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.
Candidate fix	https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6#advisory-comment-63053 : the maintainers' own security advisory: names the version that fixes it, so the fix is the difference between two releases

Decided by

Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

Finding

This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

Candidate fix

https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6#advisory-comment-63053 : the maintainers' own security advisory: names the version that fixes it, so the fix is the difference between two releases

CVSS

7.0 HIGH v3.1 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

Version Score Band Vector Assigner Type

CVSS 3.1 7.0 HIGH CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H NVD Primary published

CVSS 2.0 4.4 none AV:L/AC:M/Au:N/C:P/I:P/A:P NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	7.0	HIGH	`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`	NVD	Primary	published
CVSS 2.0	4.4	none	`AV:L/AC:M/Au:N/C:P/I:P/A:P`	NVD	Primary

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update October 2021 ↗	CPU	2021-Q4	Oracle JD Edwards / Installation (Eclipse Jetty) (Prior to 9.2.6.0)
Oracle Critical Patch Update July 2021 ↗	CPU	2021-Q3	Oracle Communications / Call Control Common Service (Eclipse Jetty) (7.0) Oracle Communications Applications / CN OCOMC (Eclipse Jetty) (12.0.0.3.0) Oracle Communications Applications / Transformation for PDC (Eclipse Jetty) (12.0.0.3.0) Oracle Siebel CRM / Test Automation (Eclipse Jetty) (21.5 and Prior)
Oracle Critical Patch Update January 2021 ↗	CPU	2021-Q1	Oracle Communications / Core (Eclipse Jetty) (3.9m0p2) Oracle Communications / REST API (Eclipse Jetty) (8.2.1.0-8.2.2.1) Oracle Financial Services Applications / Securities (Eclipse Jetty) (11.5.0-11.9.0)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update October 2021 ↗

CPU

2021-Q4

Oracle JD Edwards / Installation (Eclipse Jetty) (Prior to 9.2.6.0)

Oracle Critical Patch Update July 2021 ↗

CPU

2021-Q3

Oracle Communications / Call Control Common Service (Eclipse Jetty) (7.0)
Oracle Communications Applications / CN OCOMC (Eclipse Jetty) (12.0.0.3.0)
Oracle Communications Applications / Transformation for PDC (Eclipse Jetty) (12.0.0.3.0)
Oracle Siebel CRM / Test Automation (Eclipse Jetty) (21.5 and Prior)

Oracle Critical Patch Update January 2021 ↗

CPU

2021-Q1

Oracle Communications / Core (Eclipse Jetty) (3.9m0p2)
Oracle Communications / REST API (Eclipse Jetty) (8.2.1.0-8.2.2.1)
Oracle Financial Services Applications / Securities (Eclipse Jetty) (11.5.0-11.9.0)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Communications	Call Control Common Service (Eclipse Jetty)	7.0	7.0
Oracle Communications	Core (Eclipse Jetty)	3.9m0p2	3.9.0.2
Oracle Communications	REST API (Eclipse Jetty)	8.2.1.0-8.2.2.1
Oracle Communications Applications	CN OCOMC (Eclipse Jetty)	12.0.0.3.0	12.0.0.3.0
Oracle Communications Applications	Transformation for PDC (Eclipse Jetty)	12.0.0.3.0	12.0.0.3.0
Oracle Financial Services Applications	Securities (Eclipse Jetty)	11.5.0-11.9.0
Oracle JD Edwards	Installation (Eclipse Jetty)	Prior to 9.2.6.0
Oracle Siebel CRM	Test Automation (Eclipse Jetty)	21.5 and Prior

Family

Component

Versions, as Oracle lists them

Read as

Oracle Communications

Call Control Common Service (Eclipse Jetty)

7.0

Oracle Communications

Core (Eclipse Jetty)

3.9m0p2

3.9.0.2

Oracle Communications

REST API (Eclipse Jetty)

8.2.1.0-8.2.2.1

Oracle Communications Applications

CN OCOMC (Eclipse Jetty)

12.0.0.3.0

Oracle Communications Applications

Transformation for PDC (Eclipse Jetty)

12.0.0.3.0

Oracle Financial Services Applications

Securities (Eclipse Jetty)

11.5.0-11.9.0

Oracle JD Edwards

Installation (Eclipse Jetty)

Prior to 9.2.6.0

Oracle Siebel CRM

Test Automation (Eclipse Jetty)

21.5 and Prior

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.eclipse.jetty:jetty-webapp 0 9.4.33.v20201020 unbounded

org.mortbay.jetty:jetty-webapp 0 9.4.33 unbounded

org.eclipse.jetty:jetty-webapp 10.0.0.beta1 10.0.0.beta3 unbounded

org.mortbay.jetty:jetty-webapp 10.0.0.beta1 10.0.0.beta3 unbounded

org.eclipse.jetty:jetty-webapp 11.0.0.beta1 11.0.0.beta3 unbounded

org.mortbay.jetty:jetty-webapp 11.0.0.beta1 11.0.0.beta3 unbounded

Package	Introduced	Fixed	Last affected
`org.eclipse.jetty:jetty-webapp`	0	`9.4.33.v20201020`	unbounded
`org.mortbay.jetty:jetty-webapp`	0	`9.4.33`	unbounded
`org.eclipse.jetty:jetty-webapp`	10.0.0.beta1	`10.0.0.beta3`	unbounded
`org.mortbay.jetty:jetty-webapp`	10.0.0.beta1	`10.0.0.beta3`	unbounded
`org.eclipse.jetty:jetty-webapp`	11.0.0.beta1	`11.0.0.beta3`	unbounded
`org.mortbay.jetty:jetty-webapp`	11.0.0.beta1	`11.0.0.beta3`	unbounded

Products and versions

20 products, 38 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	apache	beam	generic	2.21.0 · 2.22.0 · 2.23.0 · 2.24.0 · 2.25.0
nvd	debian	debian linux	generic	9.0 · 10.0
nvd	eclipse	jetty	generic	≥ 1.0 and ＜ 9.3.29 · ≥ 9.4.0 and ≤ 9.4.32 · 10.0.0:alpha1 · 10.0.0:beta0 · 10.0.0:beta1 · 10.0.0:beta2 · 11.0.0:alpha1 · 11.0.0:beta1 · 11.0.0:beta2
nvd	netapp	snap creator framework	generic	any version
nvd	netapp	snapcenter	generic	any version
nvd	netapp	storage replication adapter	generic	≥ 7.2
nvd	netapp	vasa provider	generic	≥ 7.2
nvd	netapp	virtual storage console	generic	≥ 7.2
nvd	oracle	communications application session controller	generic	3.9m0p2
nvd	oracle	communications converged application server - service controller	generic	6.2
nvd	oracle	communications element manager	generic	≥ 8.2.1 and ≤ 8.2.2.1
nvd	oracle	communications offline mediation controller	generic	12.0.0.3.0
nvd	oracle	communications pricing design center	generic	12.0.0.3.0
nvd	oracle	communications services gatekeeper	generic	7.0
nvd	oracle	flexcube core banking	generic	≥ 11.5.0 and ≤ 11.9.0
nvd	oracle	flexcube private banking	generic	12.0.0 · 12.1.0
nvd	oracle	jd edwards enterpriseone tools	generic	＜ 9.2.6.0
nvd	oracle	siebel core - automation	generic	≤ 21.5
osv	org.eclipse.jetty	jetty-webapp	generic	＜ 9.4.33.99999 · ≥ 10.0.0 and ＜ 10.0.0 · ≥ 11.0.0 and ＜ 11.0.0
osv	org.mortbay.jetty	jetty-webapp	generic	＜ 9.4.33 · ≥ 10.0.0 and ＜ 10.0.0 · ≥ 11.0.0 and ＜ 11.0.0

Source

Vendor

Product

Scheme

Affected versions

nvd

apache

beam

generic

2.21.0 · 2.22.0 · 2.23.0 · 2.24.0 · 2.25.0

nvd

debian

debian linux

generic

9.0 · 10.0

nvd

eclipse

jetty

generic

≥ 1.0 and ＜ 9.3.29 · ≥ 9.4.0 and ≤ 9.4.32 · 10.0.0:alpha1 · 10.0.0:beta0 · 10.0.0:beta1 · 10.0.0:beta2 · 11.0.0:alpha1 · 11.0.0:beta1 · 11.0.0:beta2

nvd

netapp

snap creator framework

generic

any version

nvd

netapp

snapcenter

generic

any version

nvd

netapp

storage replication adapter

generic

≥ 7.2

nvd

netapp

vasa provider

generic

≥ 7.2

nvd

netapp

virtual storage console

generic

≥ 7.2

nvd

oracle

communications application session controller

generic

3.9m0p2

nvd

oracle

communications converged application server - service controller

generic

6.2

nvd

oracle

communications element manager

generic

≥ 8.2.1 and ≤ 8.2.2.1

nvd

oracle

communications offline mediation controller

generic

12.0.0.3.0

nvd

oracle

communications pricing design center

generic

12.0.0.3.0

nvd

oracle

communications services gatekeeper

generic

7.0

nvd

oracle

flexcube core banking

generic

≥ 11.5.0 and ≤ 11.9.0

nvd

oracle

flexcube private banking

generic

12.0.0 · 12.1.0

nvd

oracle

jd edwards enterpriseone tools

generic

＜ 9.2.6.0

nvd

oracle

siebel core - automation

generic

≤ 21.5

osv

org.eclipse.jetty

jetty-webapp

generic

＜ 9.4.33.99999 · ≥ 10.0.0 and ＜ 10.0.0 · ≥ 11.0.0 and ＜ 11.0.0

osv

org.mortbay.jetty

jetty-webapp

generic

＜ 9.4.33 · ≥ 10.0.0 and ＜ 10.0.0 · ≥ 11.0.0 and ＜ 11.0.0

References

URL	Tags
https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6#advisory-comment-63053	advisory
https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6	WEB
https://github.com/eclipse/jetty.project/issues/5451	WEB
https://github.com/github/codeql/pull/4473	WEB
https://lists.apache.org/thread.html/raa9c370ab42d737e93bc1795bb6a2187d7c60210cd5e3b3ce8f3c484@%3Cissues.beam.apache.org%3E	WEB
https://lists.apache.org/thread.html/rad255c736fad46135f1339408cb0147d0671e45c376c3be85ceeec1a@%3Cnotifications.zookeeper.apache.org%3E	WEB
https://lists.apache.org/thread.html/rae15d73cabef55bad148e4e6449b05da95646a2a8db3fc938e858dff@%3Cissues.beam.apache.org%3E	WEB
https://lists.apache.org/thread.html/raf9c581b793c30ff8f55f2415c7bd337eb69775aae607bf9ed1b16fb@%3Cdev.zookeeper.apache.org%3E	WEB
https://lists.apache.org/thread.html/rafb023a7c61180a1027819678eb2068b0b60cd5c2559cb8490e26c81@%3Cissues.zookeeper.apache.org%3E	WEB
https://lists.apache.org/thread.html/rb077d35f2940191daeefca0d6449cddb2e9d06bcf8f5af4da2df3ca2@%3Cissues.beam.apache.org%3E	WEB

URL

Timeline

Published	2020-10-23	By the CVE Program.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.

Published

2020-10-23

By the CVE Program.

NVD record modified

2026-06-17

NVD's own last-modified date for this record.

How VRT decided (17 of 24 rules ran)

17 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification no match A researcher's recorded decision for this specific CVE

5 manual classification no match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component no match The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side no match Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven matched In scope Maven packages: org.eclipse.jetty:jetty-webapp, org.mortbay.jetty:jetty-webapp

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint matched Mitigation candidate References include candidate fix URL (advisory tier): https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6#advisory-comment-63053

18 open-source-maven skipped The affected package being open source on Maven, so the fix can be read

19 poc-derivable skipped An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit skipped Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match no match A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc skipped Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold no match Severity is HIGH — only MEDIUM/LOW are deprioritized

24 no-exploit-published decided it matched No exploit published No exploit code has been published, and an upstream fix path does exist, so the remediation half of the candidacy still holds.

Products the scope rules checked

The products this CVE's record names, and whether VRT tracks each one. The scope rules decided on these.

Vendor Product Tracked CPE Source

eclipse jetty tracked cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:* yaml

netapp snap_creator_framework not tracked cpe:2.3:a:netapp:snap_creator_framework:-:*:*:*:*:*:*:*

netapp snapcenter not tracked cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*

netapp vasa_provider not tracked cpe:2.3:a:netapp:vasa_provider:*:*:*:*:*:clustered_data_ontap:*:*

netapp virtual_storage_console not tracked cpe:2.3:a:netapp:virtual_storage_console:*:*:*:*:*:vmware_vsphere:*:*

netapp storage_replication_adapter not tracked cpe:2.3:a:netapp:storage_replication_adapter:*:*:*:*:*:clustered_data_ontap:*:*

oracle communications_application_session_controller tracked cpe:2.3:a:oracle:communications_application_session_controller:3.9m0p2:*:*:*:*:*:*:* yaml

oracle communications_converged_application_server_-_service_controller tracked cpe:2.3:a:oracle:communications_converged_application_server_-_service_controller:6.2:*:*:*:*:*:*:* yaml

oracle communications_element_manager tracked cpe:2.3:a:oracle:communications_element_manager:*:*:*:*:*:*:*:* yaml

oracle communications_offline_mediation_controller tracked cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:* yaml

oracle communications_pricing_design_center tracked cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:* yaml

oracle communications_services_gatekeeper tracked cpe:2.3:a:oracle:communications_services_gatekeeper:7.0:*:*:*:*:*:*:* yaml

oracle flexcube_core_banking tracked cpe:2.3:a:oracle:flexcube_core_banking:*:*:*:*:*:*:*:* yaml

oracle flexcube_private_banking tracked cpe:2.3:a:oracle:flexcube_private_banking:12.0.0:*:*:*:*:*:*:* yaml

oracle jd_edwards_enterpriseone_tools tracked cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:* yaml

oracle siebel_core_-_automation tracked cpe:2.3:a:oracle:siebel_core_-_automation:*:*:*:*:*:*:*:* yaml

apache beam not tracked cpe:2.3:a:apache:beam:2.21.0:*:*:*:*:*:*:*

debian debian_linux not tracked cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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