CVE-2021-31818

Name: CVE-2021-31818
Creator: NVD / NIST
Published: 2021-06-17T14:15:08.173+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2021-31818 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Affected versions of Octopus Server are prone to an authenticated SQL injection vulnerability in the Events REST API because user supplied data in the API request isn’t parameterised correctly. Exploiting this vulnerability could allow unauthorised access to database tables.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

Affected versions of Octopus Server are prone to an authenticated SQL injection vulnerability in the Events REST API because user supplied data in the API request isn’t parameterised correctly. Exploiting this vulnerability could allow unauthorised access to database tables.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.62%

45.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Octopus	Server	>= 2018.9.17, < 2018.13.0
Octopus	Server	>= 2020.0.0, < 2020.6.0
Octopus	Server	>= 2020.6.0, < 2020.6.5146
Octopus	Server	>= 2021.1.0, < 2021.1.7316

References

Timeline

Published: Jun 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31818?

How severe is CVE-2021-31818?

CVE-2021-31818 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31818?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31818?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST