How severe is CVE-2018-11320?

CVE-2018-11320 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11320 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11320?

CVE-2018-11320 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11320?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-11320 published?

CVE-2018-11320 was published on 2018-05-21 and last updated on 2026-06-17.

CVE-2018-11320

CVE-2018-11320 is a critical-severity vulnerability in Octopus Octopus Server with a CVSS 3.x base score of 9.8. 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-532.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: Octopus Octopus Server
Published: 2018-05-21
Last modified: 2026-06-17

Description

In Octopus Deploy 2018.4.4 through 2018.5.1, Octopus variables that are sourced from the target do not have sensitive values obfuscated in the deployment logs.

Frequently asked questions

What is CVE-2018-11320?: In Octopus Deploy 2018.4.4 through 2018.5.1, Octopus variables that are sourced from the target do not have sensitive values obfuscated in the deployment logs.
How severe is CVE-2018-11320?: CVE-2018-11320 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11320 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11320?: CVE-2018-11320 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11320?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-11320 published?: CVE-2018-11320 was published on 2018-05-21 and last updated on 2026-06-17.

References

https://github.com/OctopusDeploy/Issues/issues/4578

Affected products (1)

cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:*

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