Description
Jenkins 2.196 and earlier, LTS 2.176.3 and earlier did not escape the reason why a queue items is blcoked in tooltips, resulting in a stored XSS vulnerability exploitable by users able to control parts of the reason a queue item is blocked, such as label expressions not matching any idle executors.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Jenkins project | Jenkins | 2.196 and earlier, LTS 2.176.3 and earlier | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenShift 4 | jenkins | 2.204.1.1578490170-1.el7 | RHBA-2020:0063 |
| Red Hat OpenShift 4 | openshift +1 | 4.3.0-202001131753.git.0.0aee6a8.el7 | RHBA-2020:0063 |
| Red Hat OpenShift 3 | jenkins | 2.176.4.1578402941-1.el7 | RHBA-2020:0017 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.10 | jenkins | 2.199-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.jenkins-ci.main:jenkins-core | < 2.176.4 | 2.176.4 | GHSA-9qgf-4fpf-cmh2 |
| Maven | org.jenkins-ci.main:jenkins-core | >= 2.177, < 2.197 | 2.197 | GHSA-9qgf-4fpf-cmh2 |
Advisories 2
- RHBA-2020:0063 Red Hat Bug Fix Advisory: OpenShift Container Platform 4.3 RPM release advisory Red Hat Security Advisories (RHSA) · May 19, 2026
- RHBA-2020:0017 Red Hat Bug Fix Advisory: OpenShift Container Platform 3.11 bug fix and enhancement update Red Hat Security Advisories (RHSA) · Nov 22, 2025