CVE-2021-31820

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-18 · updated 2026-06-17
Weakness: CWE-312

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.

Affected products

Octopus Deploy Octopus Server: from 2018.8.2 (excl.) before 2020.6.5310; from 2021.1.0 before 2021.1.7622 — fixed in 2020.6.5310, 2021.1.7622

How to fix

Upgrade to a fixed version: Octopus Deploy Octopus Server 2020.6.5310, 2021.1.7622. Check the vendor advisory for mitigations.

References

https://advisories.octopus.com/adv/2021-07---Proxy-Password-Stored-in-Plaintext-%28CVE-2021-31820%29.2193063986.html
https://advisories.octopus.com/adv/2021-07---Proxy-Password-Stored-in-Plaintext-%28CVE-2021-31820%29.2193063986.html

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