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CVE-2022-34174

Observable timing discrepancy allows determining username validity in Jenkins

7.5 HighFix available

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

1.63%Up 0.7 points since Jun 23, 2022
90%50%10%1%

What each source reports

NVD Score used 7.5

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm.

Record
CVE-2022-34174
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness
CWE-203
Updated
2026-11-02
CVE List No score

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm.

Record
CVE-2022-34174
Updated
2026-11-02
EUVDEUVD-2022-6009 No score

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm.

Record
EUVD-2022-6009
Updated
2026-11-03
GitHub AdvisoriesGHSA-9grj-j43m-mjqr 5.3

Observable timing discrepancy allows determining username validity in Jenkins

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm. This allows attackers to determine the validity of attacker-specified usernames.

Login attempts with an invalid username now validate a synthetic password to eliminate the timing discrepancy in Jenkins 2.356, LTS 2.332.4.

Record
GHSA-9grj-j43m-mjqr
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-203, CWE-208
Updated
2026-11-02
OSVALPINE-CVE-2022-34174 7.5

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm.

Record
ALPINE-CVE-2022-34174
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-03
OSV 7.5

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm.

Record
CVE-2022-34174
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
Show 5 moreShow less
OSVGHSA-9grj-j43m-mjqr 5.3

Observable timing discrepancy allows determining username validity in Jenkins

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm. This allows attackers to determine the validity of attacker-specified usernames.

Login attempts with an invalid username now validate a synthetic password to eliminate the timing discrepancy in Jenkins 2.356, LTS 2.332.4.

Record
GHSA-9grj-j43m-mjqr
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-203, CWE-208
Updated
2026-11-02
OSVRHSA-2023:0017 8.8

Red Hat Security Advisory: OpenShift Container Platform 4.8.56 packages and security update

Record
RHSA-2023:0017
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2023:0697 9.8

Red Hat Security Advisory: OpenShift Container Platform 4.10.52 security update

Record
RHSA-2023:0697
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2023:0777 9.9

Red Hat Security Advisory: OpenShift Container Platform 4.9.56 security update

Record
RHSA-2023:0777
CVSS 3.1
9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVBIT-jenkins-2022-34174 No score

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm.

Record
BIT-jenkins-2022-34174
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.jenkins-ci.main:jenkins-core
Maven
 2.334 up to 2.356
2.356
org.jenkins-ci.main:jenkins-core
Maven
 before 2.332.4
2.332.4
jenkins
Alpine:v3.16
 before 2.346.2-r0
2.346.2-r0
jenkins
Alpine:v3.17
 before 2.346.2-r0
2.346.2-r0
jenkins
Alpine:v3.18
 before 2.346.2-r0
2.346.2-r0
jenkins
Alpine:v3.19
 before 2.346.2-r0
2.346.2-r0
jenkins
Alpine:v3.20
 before 2.346.2-r0
2.346.2-r0
jenkins
Alpine:v3.21
 before 2.346.2-r0
2.346.2-r0
jenkins
Alpine:v3.22
 before 2.346.2-r0
2.346.2-r0
jenkins
Alpine:v3.23
 before 2.346.2-r0
2.346.2-r0
Show 10 moreShow less
Affected packages
PackageAffectedFixed
jenkins
Alpine:v3.24
 before 2.346.2-r0
2.346.2-r0
jenkins
Bitnami
 before 2.355.1
2.355.1
org.jenkins-ci.main:jenkins-core
Maven
 2.334 up to 2.356, plus listed versions
2.3352.3362.3372.3382.339
Show 16 moreShow less
2.3402.3412.3422.3432.3442.3452.3462.346.12.346.22.346.32.3472.3482.3492.3502.3542.355
2.356
org.jenkins-ci.main:jenkins-core
Maven
 before 2.332.4, 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
2.332.4
jenkins
Red Hat:openshift:4.8::el8
 before 0:2.361.1.1672840472-1.el8
0:2.361.1.1672840472-1.el8
jenkins-2-plugins
Red Hat:openshift:4.8::el8
 before 0:4.8.1672842762-1.el8
0:4.8.1672842762-1.el8
jenkins-2-plugins
Red Hat:openshift:4.10::el8
 before 0:4.10.1675407676-1.el8
0:4.10.1675407676-1.el8
jenkins
Red Hat:openshift:4.10::el8
 before 0:2.361.1.1675406172-1.el8
0:2.361.1.1675406172-1.el8
jenkins-2-plugins
Red Hat:openshift:4.9::el8
 before 0:4.9.1675668922-1.el8
0:4.9.1675668922-1.el8
jenkins
Red Hat:openshift:4.9::el8
 before 0:2.361.1.1675668150-1.el8
0:2.361.1.1675668150-1.el8

History

History
RecordedChangedSources
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2022-34174 is a high vulnerability (CVSS 7.5) in Jenkins, published June 22, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.63%, the 76th percentile. Fixed in org.jenkins-ci.main:jenkins-core 2.356.

References

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