How severe is CVE-2020-2255?

CVE-2020-2255 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-2255 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2255?

CVE-2020-2255 affects Jenkins Blue Ocean. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2255?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-2255 published?

CVE-2020-2255 was published on 2020-09-16 and last updated on 2026-06-17.

CVE-2020-2255

CVE-2020-2255 is a medium-severity vulnerability in Jenkins Blue Ocean with a CVSS 3.x base score of 4.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Jenkins Blue Ocean
Published: 2020-09-16
Last modified: 2026-06-17

Description

A missing permission check in Jenkins Blue Ocean Plugin 1.23.2 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL.

Frequently asked questions

What is CVE-2020-2255?: A missing permission check in Jenkins Blue Ocean Plugin 1.23.2 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL.
How severe is CVE-2020-2255?: CVE-2020-2255 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-2255 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2255?: CVE-2020-2255 affects Jenkins Blue Ocean. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2255?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-2255 published?: CVE-2020-2255 was published on 2020-09-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:blue_ocean:*:*:*:*:*:jenkins:*:*

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