How severe is CVE-2026-57281?

CVE-2026-57281 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-57281 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.

What products are affected by CVE-2026-57281?

CVE-2026-57281 affects Jenkins Script Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-57281?

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-2026-57281 have an EU (EUVD) identifier?

Yes. CVE-2026-57281 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38761.

When was CVE-2026-57281 published?

CVE-2026-57281 was published on 2026-06-24 and last updated on 2026-06-30.

CVE-2026-57281

CVE-2026-57281 is a high-severity vulnerability in Jenkins Script Security with a CVSS 3.x base score of 7.5. 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-93.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38761
Weakness: CWE-93
Affected product: Jenkins Script Security
Published: 2026-06-24
Last modified: 2026-06-30

Description

Jenkins Script Security Plugin 1402.v94c9ce464861 and earlier does not reject Groovy AST transformation annotations carrying an extensions member, allowing attackers able to run sandboxed Groovy scripts to execute code outside the sandbox if a suitable script is present on the classpath of the component that evaluates the script.

Frequently asked questions

What is CVE-2026-57281?: Jenkins Script Security Plugin 1402.v94c9ce464861 and earlier does not reject Groovy AST transformation annotations carrying an extensions member, allowing attackers able to run sandboxed Groovy scripts to execute code outside the sandbox if a suitable script is present on the classpath of the component that evaluates the script.
How severe is CVE-2026-57281?: CVE-2026-57281 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-57281 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.
What products are affected by CVE-2026-57281?: CVE-2026-57281 affects Jenkins Script Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-57281?: 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-2026-57281 have an EU (EUVD) identifier?: Yes. CVE-2026-57281 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38761.
When was CVE-2026-57281 published?: CVE-2026-57281 was published on 2026-06-24 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:jenkins:script_security:*:*:*:*:*:jenkins:*:*

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