Jenkins 2.554 and earlier, LTS 2.541.2 and earlier does not safely handle symbolic links during the extraction of .tar and .tar.gz archives, allowing crafted archives to write files to arbitrary locations on the filesystem, restricted only by file system access permissions of the user running Jenkins. This can be exploited to deploy malicious scripts or plugins on the controller by attackers with Item/Configure permission, or able to control agent processes.
CVE-2026-33001
HIGHPre-NVD 8.88.8
EchelonGraph scoreLOW confidence
This high-severity CVE scores 8.8 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: cisa-adp
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- 8.8
- EG Score
- 8.8(low)
- EPSS
- 63.4%
- KEV
- Not listed
Published
March 18, 2026
Last Modified
June 30, 2026
Advisory Details (10)
Auto-updated Jun 30, 2026Patch available. Sources: redhat.
redhat Patch Available
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generic
Jenkins Security Advisory 2026-03-18
https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657Vendor Advisories for CVE-2026-33001(10)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:10214Red Hat Product SecurityHigh
Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.16 security update.
- RHSA-2026:10215Red Hat Product SecurityHigh
Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.18 security update.
- RHSA-2026:10213Red Hat Product SecurityHigh
Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.17 security update.
- RHSA-2026:10211Red Hat Product SecurityHigh
Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.14 security update.
- RHSA-2026:10209Red Hat Product SecurityHigh
Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.12 security update.
- RHSA-2026:10206Red Hat Product SecurityHigh
Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.19 security update.
- RHSA-2026:10205Red Hat Product SecurityHigh
Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.20 security update.
- RHSA-2026:10204Red Hat Product SecurityHigh
Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.15 security update.
- +2 more
Patch Availability(3)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | ocp-tools-4/jenkins-rhel9:1776944215 | 2026-04-23 | redhat |
| redhat | ocp-tools-4/jenkins-rhel8:1776764096 | 2026-04-23 | redhat |
| redhat | ocp-tools-4/jenkins-rhel8:1776762347 | 2026-04-23 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.jenkins-ci.main:jenkins-core | 1.396 ... 2.99 (1012 versions) | 2.555 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 16× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-08 15:15 UTCEPSS rescore
- 2026-07-07 13:46 UTCEPSS rescore
- 2026-07-06 16:27 UTCEPSS rescore
- 2026-07-06 16:27 UTCEPSS rescore
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-04 06:31 UTCEPSS rescore
- 2026-07-01 15:06 UTCEPSS rescore
- 2026-06-30 23:22 UTCEPSS rescore
- 2026-06-30 04:38 UTCEG score recompute
- 2026-06-30 04:38 UTCVendor advisory
- 2026-06-30 04:32 UTCNVD updatefirst tracked
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat
Frequently asked(5)
What is CVE-2026-33001?
CVE-2026-33001 is a high vulnerability published on March 18, 2026. Jenkins 2.554 and earlier, LTS 2.541.2 and earlier does not safely handle symbolic links during the extraction of .tar and .tar.gz archives, allowing crafted archives to write files to arbitrary locations on the filesystem, restricted only by file system access permissions of the user running…
When was CVE-2026-33001 disclosed?
CVE-2026-33001 was first published in the National Vulnerability Database on March 18, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33001 actively exploited?
CVE-2026-33001 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 63.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-33001?
CVE-2026-33001 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-33001?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33001, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-33001
Is Your Infrastructure Affected by CVE-2026-33001?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.