Jenkins Security Advisory 2021-10-06

Affects Jenkins Core Affects plugin: Git

CSIRTS triage

What: Multiple vulnerabilities exist in Jenkins Core and the Git plugin.
Who is affected: Deployments of Jenkins Core and the Git plugin are affected.
Urgency: Remediation is necessary as vulnerabilities exist, although exploitation status is currently unknown.
Action: Update to the latest versions of Jenkins Core and the Git plugin.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Jenkins Core

Get an email when a new Jenkins Core advisory drops — max one per day, one-click unsubscribe.

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2021-216821.00% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 60% of all EPSS-scored CVEs.
Moderate exploitation riskCVE-2014-35779.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 95% of all EPSS-scored CVEs.
Moderate exploitation riskCVE-2021-216832.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 81% of all EPSS-scored CVEs.
Moderate exploitation riskCVE-2021-216841.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 67% of all EPSS-scored CVEs.

CVE	CSIRTS overview	External
CVE-2021-21682	coverage & exploitation status	NVD · CVE.org
CVE-2014-3577	coverage & exploitation status	NVD · CVE.org
CVE-2021-21683	coverage & exploitation status	NVD · CVE.org
CVE-2021-21684	coverage & exploitation status	NVD · CVE.org