CVE-2021-21687

At a glance

Severity: Not available
EPSS: EPSS 1.43 % · percentile 73 (2026-10-27)
State: PUBLISHED
Published: 2021-11-04
Updated: 2024-08-03
Assigner: jenkins
NVD status: Modified

Description

Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create symbolic links when unarchiving a symbolic link in FilePath#untar.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	NVD · nvd@nist.gov (Primary)
CVSS 2.0	MEDIUM 6.4	AV:N/AC:L/Au:N/C:P/I:P/A:N	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-862

Advisories

GHSA-3q84-vrvx-rfvf — Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

European references

ENISA EUVD · EUVD-2022-2231
GCVE · GCVE-0-2021-21687

Affected configurations (NVD CPE)

cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:* < 2.303.3
cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:* < 2.319

Affected products

Product	Versions
Jenkins project · Jenkins	affected unspecified ≤ 2.318 ; affected unspecified ≤ LTS 2.303.2

References

https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD