CVE-2020-2105

Jenkins REST APIs vulnerable to clickjacking

5.4 MediumFix available

REST API endpoints in Jenkins 2.218 and earlier, LTS 2.204.1 and earlier were vulnerable to clickjacking attacks.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

1.85%Up 0.4 points since Apr 14, 2021

What each source reports

NVD Score used 5.4

REST API endpoints in Jenkins 2.218 and earlier, LTS 2.204.1 and earlier were vulnerable to clickjacking attacks.

Record: CVE-2020-2105
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-1021
Updated: 2026-11-02

CVE List No score

REST API endpoints in Jenkins 2.218 and earlier, LTS 2.204.1 and earlier were vulnerable to clickjacking attacks.

Record: CVE-2020-2105
Updated: 2026-11-02

EUVDEUVD-2022-3082 No score

REST API endpoints in Jenkins 2.218 and earlier, LTS 2.204.1 and earlier were vulnerable to clickjacking attacks.

Record: EUVD-2022-3082
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7xp8-7wqx-5hqx 3.1

Jenkins REST APIs vulnerable to clickjacking

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not serve the X-Frame-Options: deny HTTP header on REST API responses to protect against clickjacking attacks. An attacker could exploit this by routing the victim through a specially crafted web page that embeds a REST API endpoint in an iframe and tricking the user into performing an action which would allow for the attacker to learn the content of that REST API endpoint.

Jenkins 2.219, LTS 2.204.2 now adds the X-Frame-Options: deny HTTP header to REST API responses, which prevents these types of clickjacking attacks.

Record: GHSA-7xp8-7wqx-5hqx
CVSS 3.0: 3.1 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness: CWE-1021
Updated: 2026-11-02

OSV 5.4

REST API endpoints in Jenkins 2.218 and earlier, LTS 2.204.1 and earlier were vulnerable to clickjacking attacks.

Record: CVE-2020-2105
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated: 2026-11-02

OSVGHSA-7xp8-7wqx-5hqx 3.1

Jenkins REST APIs vulnerable to clickjacking

Jenkins 2.219, LTS 2.204.2 now adds the X-Frame-Options: deny HTTP header to REST API responses, which prevents these types of clickjacking attacks.

Record: GHSA-7xp8-7wqx-5hqx
CVSS 3.0: 3.1 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness: CWE-1021
Updated: 2026-11-02

OSVRHBA-2020:0402 8.6

Red Hat Bug Fix Advisory: OpenShift Container Platform 3.11 bug fix update

Record: RHBA-2020:0402
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Updated: 2026-11-02

OSVRHBA-2020:0675 8.6

Red Hat Bug Fix Advisory: OpenShift Container Platform 4.3.5 packages update

Record: RHBA-2020:0675
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Updated: 2026-11-02

OSVBIT-jenkins-2020-2105 No score

REST API endpoints in Jenkins 2.218 and earlier, LTS 2.204.1 and earlier were vulnerable to clickjacking attacks.

Record: BIT-jenkins-2020-2105
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`org.jenkins-ci.main:jenkins-core` Maven	through 2.204.1	2.204.2
`org.jenkins-ci.main:jenkins-core` Maven	2.205 to 2.218	2.219
`jenkins` Bitnami	before 2.218.1	2.218.1
`org.jenkins-ci.main:jenkins-core` Maven	before 2.204.2, plus listed versions 1.3961.3971.3981.3991.400 Show 45 moreShow less 1.4011.4031.4041.4051.4061.4071.4081.4091.409.11.409.21.409.31.4101.4111.4121.4131.4141.4151.4161.4171.4181.4191.4201.4211.4221.4231.4241.424.11.424.21.424.31.424.41.424.51.424.61.4251.4261.4271.4281.4291.4301.4311.4321.4331.4341.4351.4361.437	2.204.2
`org.jenkins-ci.main:jenkins-core` Maven	2.205 up to 2.219, plus listed versions 2.2062.2072.2082.2092.210 Show 8 moreShow less 2.2112.2122.2132.2142.2152.2162.2172.218	2.219
`atomic-enterprise-service-catalog` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 1:3.11.170-1.git.1.91db82e.el7	1:3.11.170-1.git.1.91db82e.el7
`atomic-enterprise-service-catalog-svcat` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 1:3.11.170-1.git.1.91db82e.el7	1:3.11.170-1.git.1.91db82e.el7
`atomic-openshift` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-clients` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-clients-redistributable` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7

Show 41 moreShow less

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-2105 is a medium vulnerability (CVSS 5.4) in Jenkins, published January 29, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.85%, the 79th percentile. Fixed in org.jenkins-ci.main:jenkins-core 2.204.2.

References

Show 53 moreShow less

This page doesn't list everything

Left out here: 530 versions. The JSON record has them.

Package	Affected	Fixed
`atomic-openshift-cluster-autoscaler` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.0a0df6a.el7	0:3.11.170-1.git.1.0a0df6a.el7
`atomic-openshift-descheduler` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.9ad83f2.el7	0:3.11.170-1.git.1.9ad83f2.el7
`atomic-openshift-docker-excluder` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-dockerregistry` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.55fab05.el7	0:3.11.170-1.git.1.55fab05.el7
`atomic-openshift-excluder` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-hyperkube` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-hypershift` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-master` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-metrics-server` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.357f177.el7	0:3.11.170-1.git.1.357f177.el7
`atomic-openshift-node` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-node-problem-detector` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.b1f90a6.el7	0:3.11.170-1.git.1.b1f90a6.el7
`atomic-openshift-pod` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-sdn-ovs` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-service-idler` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.8328979.el7	0:3.11.170-1.git.1.8328979.el7
`atomic-openshift-template-service-broker` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-tests` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.0.00cac56.el7	0:3.11.170-1.git.0.00cac56.el7
`atomic-openshift-web-console` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.3d64e8b.el7	0:3.11.170-1.git.1.3d64e8b.el7
`cri-o` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:1.11.16-0.5.dev.rhaos3.11.git3f89eba.el7	0:1.11.16-0.5.dev.rhaos3.11.git3f89eba.el7
`cri-o-debuginfo` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:1.11.16-0.5.dev.rhaos3.11.git3f89eba.el7	0:1.11.16-0.5.dev.rhaos3.11.git3f89eba.el7
`golang-github-openshift-oauth-proxy` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.b49be83.el7	0:3.11.170-1.git.1.b49be83.el7
`golang-github-prometheus-alertmanager` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.61d7960.el7	0:3.11.170-1.git.1.61d7960.el7
`golang-github-prometheus-node_exporter` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.51473b7.el7	0:3.11.170-1.git.1.51473b7.el7
`golang-github-prometheus-prometheus` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.227bc98.el7	0:3.11.170-1.git.1.227bc98.el7
`jenkins` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:2.204.2.1580891656-1.el7	0:2.204.2.1580891656-1.el7
`jenkins-2-plugins` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.1579107288-1.el7	0:3.11.1579107288-1.el7
`openshift-ansible` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-2.git.5.8802564.el7	0:3.11.170-2.git.5.8802564.el7
`openshift-ansible-docs` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-2.git.5.8802564.el7	0:3.11.170-2.git.5.8802564.el7
`openshift-ansible-playbooks` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-2.git.5.8802564.el7	0:3.11.170-2.git.5.8802564.el7
`openshift-ansible-roles` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-2.git.5.8802564.el7	0:3.11.170-2.git.5.8802564.el7
`openshift-ansible-test` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-2.git.5.8802564.el7	0:3.11.170-2.git.5.8802564.el7
`openshift-enterprise-autoheal` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.dfe6c52.el7	0:3.11.170-1.git.1.dfe6c52.el7
`openshift-enterprise-cluster-capacity` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.661684b.el7	0:3.11.170-1.git.1.661684b.el7
`openshift-kuryr` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.7265da1.el7	0:3.11.170-1.git.1.7265da1.el7
`openshift-kuryr-cni` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.7265da1.el7	0:3.11.170-1.git.1.7265da1.el7
`openshift-kuryr-common` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.7265da1.el7	0:3.11.170-1.git.1.7265da1.el7
`openshift-kuryr-controller` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.7265da1.el7	0:3.11.170-1.git.1.7265da1.el7
`prometheus` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.227bc98.el7	0:3.11.170-1.git.1.227bc98.el7
`prometheus-alertmanager` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.61d7960.el7	0:3.11.170-1.git.1.61d7960.el7
`prometheus-node-exporter` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.51473b7.el7	0:3.11.170-1.git.1.51473b7.el7
`python2-kuryr-kubernetes` Red Hat:openshift:3.11::el7 From an advisory covering 8 CVEs	before 0:3.11.170-1.git.1.7265da1.el7	0:3.11.170-1.git.1.7265da1.el7
`jenkins` Red Hat:openshift:4.3::el7 From an advisory covering 7 CVEs	before 0:2.204.2.1583446818-1.el7	0:2.204.2.1583446818-1.el7