Skip to main content
VulnerabilityPublished Updated

CVE-2026-33001: Jenkins · Link Following

Affects JenkinsSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 8.8 High.

Data as of 31 Oct 2026, 08:20 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
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:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Jenkins ProjectJenkinsAffected–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

Community reviews

Loading reviews…