How severe is CVE-2020-2120?

CVE-2020-2120 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-2020-2120 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2120?

CVE-2020-2120 affects Jenkins Fitnesse. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2120?

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-2020-2120 published?

CVE-2020-2120 was published on 2020-02-12 and last updated on 2026-06-17.

CVE-2020-2120

CVE-2020-2120 is a high-severity vulnerability in Jenkins Fitnesse 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-611.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Jenkins Fitnesse
Published: 2020-02-12
Last modified: 2026-06-17

Description

Jenkins FitNesse Plugin 1.30 and earlier does not configure the XML parser to prevent XML external entity (XXE) attacks.

Frequently asked questions

What is CVE-2020-2120?: Jenkins FitNesse Plugin 1.30 and earlier does not configure the XML parser to prevent XML external entity (XXE) attacks.
How severe is CVE-2020-2120?: CVE-2020-2120 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-2020-2120 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2120?: CVE-2020-2120 affects Jenkins Fitnesse. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2120?: 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-2020-2120 published?: CVE-2020-2120 was published on 2020-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:fitnesse:*:*:*:*:*:jenkins:*:*

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CVE-2018-1000837 — Critical (CVSS 10.0): UML Designer version <= 8.0.0 contains a XML External Entity (XXE) vulnerability in XML parser for plugins that can…
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