How severe is CVE-2020-2134?

CVE-2020-2134 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-2020-2134 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2134?

CVE-2020-2134 affects Jenkins Script Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2134?

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-2020-2134 published?

CVE-2020-2134 was published on 2020-03-09 and last updated on 2026-06-17.

CVE-2020-2134

CVE-2020-2134 is a high-severity vulnerability in Jenkins Script Security 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-863.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Jenkins Script Security
Published: 2020-03-09
Last modified: 2026-06-17

Description

Sandbox protection in Jenkins Script Security Plugin 1.70 and earlier could be circumvented through crafted constructor calls and crafted constructor bodies.

Frequently asked questions

What is CVE-2020-2134?: Sandbox protection in Jenkins Script Security Plugin 1.70 and earlier could be circumvented through crafted constructor calls and crafted constructor bodies.
How severe is CVE-2020-2134?: CVE-2020-2134 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-2020-2134 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2134?: CVE-2020-2134 affects Jenkins Script Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2134?: 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-2020-2134 published?: CVE-2020-2134 was published on 2020-03-09 and last updated on 2026-06-17.

References

Affected products (1)

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

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