CVE-2021-31820

CVE-2021-31820 is a high-severity vulnerability in Octopus Octopus Server with a CVSS 3.x base score of 7.5. 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-312.

Key facts

Description

In Octopus Server after version 2018.8.2 if the Octopus Server Web Request Proxy is configured with authentication, the password is shown in plaintext in the UI.

Frequently asked questions

What is CVE-2021-31820?
In Octopus Server after version 2018.8.2 if the Octopus Server Web Request Proxy is configured with authentication, the password is shown in plaintext in the UI.
How severe is CVE-2021-31820?
CVE-2021-31820 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-31820 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31820?
CVE-2021-31820 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31820?
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-2021-31820 published?
CVE-2021-31820 was published on 2021-08-18 and last updated on 2026-06-17.

References

Affected products (1)

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