How severe is CVE-2020-2109?

CVE-2020-2109 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-2020-2109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2109?

CVE-2020-2109 affects Jenkins Pipeline. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2109?

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.

When was CVE-2020-2109 published?

CVE-2020-2109 was published on 2020-02-12 and last updated on 2026-06-17.

CVE-2020-2109

CVE-2020-2109 is a high-severity vulnerability in Jenkins Pipeline 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Jenkins Pipeline
Published: 2020-02-12
Last modified: 2026-06-17

Description

Sandbox protection in Jenkins Pipeline: Groovy Plugin 2.78 and earlier can be circumvented through default parameter expressions in CPS-transformed methods.

Frequently asked questions

What is CVE-2020-2109?: Sandbox protection in Jenkins Pipeline: Groovy Plugin 2.78 and earlier can be circumvented through default parameter expressions in CPS-transformed methods.
How severe is CVE-2020-2109?: CVE-2020-2109 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-2020-2109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2109?: CVE-2020-2109 affects Jenkins Pipeline. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2109?: 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.
When was CVE-2020-2109 published?: CVE-2020-2109 was published on 2020-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:pipeline\:_groovy:*:*:*:*:*:jenkins:*:*

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