CVE-2021-21682

mediumpriority · track · 17EPSS 0.010 · 63 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.00% (63rd) EPSS

CVSS 4 · medium

Is it mine?

10 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.

cvss

Technical severity, 0–10. One row per scoring source.

6.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.16.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Lsecondary · OSV

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-42US

affected products (10)

Products and version ranges known to be affected.

Jenkins Jenkins Pluginsall versionscert_bundDEcpe:/a:cloudbees:jenkins:plugins
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat OpenShift Container Platform 4.12all versionscert_bundDEcpe:/a:redhat:openshift:container_platform_4.12
Jenkins Project Jenkins≤ unspecified ≤LTS 2.303.1enisa_euvdEU
Jenkins Project Jenkins≤ unspecified ≤2.314enisa_euvdEU
jenkins jenkins≤ 2.303.1nvdUScpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:*
jenkins jenkins≤ 2.314nvdUScpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:*
Bitnami jenkins< 2.314.1osvUSpkg:bitnami/jenkins
Maven org.jenkins-ci.main:jenkins-core< 2.303.2osvUSpkg:maven/org.jenkins-ci.main/jenkins-core
Maven org.jenkins-ci.main:jenkins-core2.304 → 2.315osvUSpkg:maven/org.jenkins-ci.main/jenkins-core

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0432Jenkins: Mehrere SchwachstellenDeutsch2021-10-06csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Jenkins ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Dateien zu manipulieren oder einen Cross-Site-Scripting-Angriff durchzuführen.
GHSA-6q4g-84f3-mw74Improper handling of equivalent directory names on Windows in Jenkins2022-05-24ghsa · osvUS
Jenkins stores jobs and other entities on disk using their name shown on the UI as file and folder names. On Windows, when specifying a file or folder with a trailing dot character (`example.`), the file or folder will be treated as if that character was not present (`example`). As both are legal names for jobs and other entities in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier, this could allow users with the appropriate permissions to change or replace configurations of jobs and other entities. Jenkins 2.315, LTS 2.303.2 does not allow names of jobs and other entities to end with a dot character.
BIT-jenkins-2021-216822024-03-06vendor · osvUS
Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2021-10-06modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

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