Cyber Resilience

CVE-2021-21686

High

Published: 04 November 2021

Published
04 November 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS Score 0.0051 66.7th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-21686 is a high-severity Link Following (CWE-59) vulnerability in Jenkins Jenkins. Its CVSS base score is 8.1 (High).

Operationally, ranked in the top 33.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

File path filters in the agent-to-controller security subsystem of Jenkins 2.318 and earlier, LTS 2.303.2 and earlier do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories.

CWE(s)
CWE-59

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

jenkins
jenkins
≤ 2.303.3 · ≤ 2.319

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References