jenkins: Cron expression form validation could enter infinite loop, potentially resulting in denial of service
Published Aug 23, 2018
6.5
MEDIUMCVSS 3.0
EPSS 1.17%
Description
A denial of service vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in CronTab.java that allows attackers with Overall/Read permission to have a request handling thread enter an infinite loop.
Affected products
No data.
No data.
Red Hat OpenShift Container Platform 3.10
jenkins
Will not fix
Red Hat OpenShift Container Platform 3.11
jenkins
Not affected
Red Hat OpenShift Container Platform 3.2
jenkins
Will not fix
Red Hat OpenShift Container Platform 3.3
jenkins
Will not fix
Red Hat OpenShift Container Platform 3.4
jenkins
Will not fix
Red Hat OpenShift Container Platform 3.5
jenkins
Will not fix
Red Hat OpenShift Container Platform 3.6
jenkins
Will not fix
Red Hat OpenShift Container Platform 3.7
jenkins
Will not fix
Red Hat OpenShift Container Platform 3.9
jenkins
Will not fix
Red Hat OpenShift Enterprise 3.1
jenkins
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat OpenShift Container Platform 3.10 | jenkins | Will not fix | n/a |
| Red Hat OpenShift Container Platform 3.11 | jenkins | Not affected | n/a |
| Red Hat OpenShift Container Platform 3.2 | jenkins | Will not fix | n/a |
| Red Hat OpenShift Container Platform 3.3 | jenkins | Will not fix | n/a |
| Red Hat OpenShift Container Platform 3.4 | jenkins | Will not fix | n/a |
| Red Hat OpenShift Container Platform 3.5 | jenkins | Will not fix | n/a |
| Red Hat OpenShift Container Platform 3.6 | jenkins | Will not fix | n/a |
| Red Hat OpenShift Container Platform 3.7 | jenkins | Will not fix | n/a |
| Red Hat OpenShift Container Platform 3.9 | jenkins | Will not fix | n/a |
| Red Hat OpenShift Enterprise 3.1 | jenkins | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Users of OpenShift Container Platform 3.x should upgrade to 3.11 to pick up a fix for this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:S/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.17% (0.01170) | 66.26th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.17% (0.01170) | 66.02th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.08% (0.00081) | 35.23th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.08% (0.00081) | 33.88th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.07% (0.00073) | 29.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00081) | 32.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00518) | 11.68th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.52% (0.00518) | 0.00th | v1 |
References (7)
- https://access.redhat.com/security/cve/CVE-2018-1999044 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1620344 Issue Tracking
- https://github.com/advisories/GHSA-8qpf-fv36-h4r8 Advisory
- https://github.com/jenkinsci/jenkins/commit/e5046911c57e60a1d6d8aca9b21bd9093b0f3763
- https://jenkins.io/security/advisory/2018-08-15/#SECURITY-790 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-1999044
- https://www.cve.org/CVERecord?id=CVE-2018-1999044
Change history (0)
No recorded changes yet.