← Vulnerability feed

Vulnerability record · CVE-2021-31820 · published 18 August 2021

CVE-2021-31820: Octopus server cleartext storage of sensitive data vulnerability

Octopus · Octopus Server

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.

7.5 CVSS 3.1 High EPSS 0.61% · top 52.1% CWE-312 · Cleartext storage of sensitive data
7.5CVSS 3.1 base score, v2 5.0
0.61%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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

Track CVE-2021-31820 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-2572Octopus server improper authentication vulnerabilityIn affected versions of Octopus Server where access is managed by an external authentication provider, it was possible that the API key/keys of a dis…EPSS 0.91%9.8CVE-2022-2778Octopus server vulnerabilityIn affected versions of Octopus Deploy it is possible to bypass rate limiting on login using null bytes.EPSS 0.84%9.8CVE-2018-11320Octopus server sensitive information in log file vulnerabilityIn 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 deploy…EPSS 1.4%9.1CVE-2022-2782Octopus server insufficient session expiration vulnerabilityIn affected versions of Octopus Server it is possible for a session token to be valid indefinitely due to improper validation of the session token pa…EPSS 0.59%8.8CVE-2022-4009Octopus server command injection vulnerabilityIn affected versions of Octopus Deploy it is possible for a user to introduce code via offline package creationEPSS 0.72%8.8CVE-2018-18850Octopus server vulnerabilityIn Octopus Deploy 2018.8.0 through 2018.9.x before 2018.9.1, an authenticated user with permission to modify deployment processes could upload a mali…EPSS 12%8.7CVE-2024-9194Octopus server sql injection vulnerabilityImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Linux and Microsoft Windows Octopus Server on W…EPSS 0.43%8.1CVE-2022-2780Octopus server authentication bypass by capture-replay vulnerabilityIn affected versions of Octopus Server it is possible to use the Git Connectivity test function on the VCS project to initiate an SMB request resulti…EPSS 0.62%

Source: NIST National Vulnerability Database (record CVE-2021-31820), CISA KEV, FIRST EPSS (scores of 2026-10-13). This page is refreshed as NVD updates the record.