CVE-2026-33001: Jenkins · Link Following
Affects JenkinsSource CVE Database V5
Not known to be exploited · CVSS 8.8 High.
Data as of 31 Oct 2026, 08:20 UTC
- EPSS
- 2.0% chance of exploitation in 30 days – higher than 81% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Jenkins ProjectJenkins | Affected– | Fixed in– |
AI-suggested
Red Hat has released security updates for affected products, including OpenShift Jenkins 4.12, which address CVE-2026-33001. It is recommended that users upgrade to the latest available versions as per Red Hat advisories linked in the vendor advisory content. Since this is a vulnerability in self-hosted Jenkins instances, patching the Jenkins installation to a fixed version is the primary mitigation. No vendor advisory indicates that no action is required or that the issue is already mitigated without patching. Patch status is confirmed by Red Hat advisories; users should consult these for exact fixed versions and update instructions.
Description
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.
References
- jenkins.io/security/advisory/2026-03-18/ (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-33001 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2448645 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33001.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10209 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10201 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10211 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10204 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10214 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10213 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10215 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10206 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10199 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10205 (opens in a new tab)