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CVE-2021-21627

27
FAUCET Score

CVE-2021-21627 is a cross-site request forgery (CSRF) vulnerability affecting Jenkins Libvirt Agents Plugin versions 1.9.0 and earlier. This high-severity vulnerability (CVSS 8.8) allows unauthenticated attackers to stop hypervisor domains through a low-complexity attack requiring user interaction, potentially leading to significant impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.9.0CPE matchmatch criteria
cpe:2.3:a:jenkins:libvirt_agents:*:*:*:*:*:jenkins:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0082 is in the 55th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.jenkins-ci.plugins:libvirt-slaveFixed in: 1.9.1
jenkinsvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-mm5c-7mpr-99fmhigh

CSRF vulnerability in Jenkins Libvirt Agents Plugin

May 24, 2022

References

jenkins.io / security/advisory/2021-03-18
Vendor Advisory
openwall.com / lists/oss-security/2021/03/18/5
Mailing ListThird Party Advisory