How severe is CVE-2018-1000421?

CVE-2018-1000421 has a CVSS 3.x base score of 6.5, 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 high, and availability none.

Is CVE-2018-1000421 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-2018-1000421?

CVE-2018-1000421 affects Apache Mesos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000421?

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

When was CVE-2018-1000421 published?

CVE-2018-1000421 was published on 2019-01-09 and last updated on 2026-06-17.

CVE-2018-1000421

CVE-2018-1000421 is a medium-severity vulnerability in Apache Mesos with a CVSS 3.x base score of 6.5. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Apache Mesos
Published: 2019-01-09
Last modified: 2026-06-17

Description

An improper authorization vulnerability exists in Jenkins Mesos Plugin 0.17.1 and earlier in MesosCloud.java that allows attackers with Overall/Read access to initiate a test connection to an attacker-specified Mesos server with attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

Frequently asked questions

What is CVE-2018-1000421?: An improper authorization vulnerability exists in Jenkins Mesos Plugin 0.17.1 and earlier in MesosCloud.java that allows attackers with Overall/Read access to initiate a test connection to an attacker-specified Mesos server with attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.
How severe is CVE-2018-1000421?: CVE-2018-1000421 has a CVSS 3.x base score of 6.5, 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 high, and availability none.
Is CVE-2018-1000421 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-2018-1000421?: CVE-2018-1000421 affects Apache Mesos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000421 published?: CVE-2018-1000421 was published on 2019-01-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:mesos:*:*:*:*:*:jenkins:*:*

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