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CVE-2026-27099

Published: Feb 18, 2026Updated: Feb 20, 2026 Sources: CVE List NVD GHSA BDUCWE-79
NVD MITRE
8.0CVSSHIGH
EPSS Score
0.5%
Top 63.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Jenkins 2.483 through 2.550 (both inclusive), LTS 2.492.1 through 2.541.1 (both inclusive) does not escape the user-provided description of the "Mark temporarily offline" offline cause, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure or Agent/Disconnect permission.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

JenkinsJenkins Project
On-premDev Tool
DevTools & CI / ci-cd
org.jenkins-ci.main:jenkins-coreMavenOSS Libraries
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
JenkinsCD FoundationDevTools & CI
jenkinsjenkins
On-premDev Tool
DevTools & CI / ci-cd
jenkins projectoss-projectUSDevTools & CI
mavenpackage-ecosystemOSS Libraries
ооо «ред софт»commercialRUOperating Systemsaka red soft
cd foundationoss-projectUSDevTools & CIaka c d foundation, cdu foundation
jenkinsoss-projectUSDevTools & CIaka jenkins ci

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669
jenkins.io
https://nvd.nist.gov/vuln/detail/CVE-2026-27099
nvd.nist.gov
https://github.com/jenkinsci/jenkins/commit/578c028e2cdfdc9e124d0ca389a80bb2bd231ab2
github.com
and 9 more references View all →

Timeline

Published
Feb 18, 2026
Last Updated
Feb 20, 2026

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