How severe is CVE-2026-57296?

CVE-2026-57296 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-57296 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-57296?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-57296 have an EU (EUVD) identifier?

Yes. CVE-2026-57296 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38777.

When was CVE-2026-57296 published?

CVE-2026-57296 was published on 2026-06-24 and last updated on 2026-06-25.

CVE-2026-57296

CVE-2026-57296 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38777
Weakness: CWE-22
Published: 2026-06-24
Last modified: 2026-06-25

Description

Jenkins External Workspace Manager Plugin 1.3.2 and earlier does not reject path traversal sequences in the custom workspace path provided to the exwsAllocate Pipeline step, allowing attackers with Item/Configure permission to read arbitrary files on the Jenkins controller file system, which can lead to remote code execution.

Frequently asked questions

What is CVE-2026-57296?: Jenkins External Workspace Manager Plugin 1.3.2 and earlier does not reject path traversal sequences in the custom workspace path provided to the exwsAllocate Pipeline step, allowing attackers with Item/Configure permission to read arbitrary files on the Jenkins controller file system, which can lead to remote code execution.
How severe is CVE-2026-57296?: CVE-2026-57296 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-57296 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-57296?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-57296 have an EU (EUVD) identifier?: Yes. CVE-2026-57296 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38777.
When was CVE-2026-57296 published?: CVE-2026-57296 was published on 2026-06-24 and last updated on 2026-06-25.

References

https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3777

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