What is CVE-2022-1881?

CVE-2022-1881 is a medium-severity vulnerability in Octopus Server, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2022-07-15.

How severe is CVE-2022-1881?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Octopus Server

CVE-2022-1881

In affected versions of Octopus Server an Insecure Direct Object Reference vulnerability exists where it is possible for a user to download Project Exports from a Project they do not have permissions to access. This vulnerability only impacts projects within the same Space.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2022-07-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Octopus Server
Octopus Deploy Server — versions 2021.1.1, unspecified, 2022.1.2121

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

advisories.octopus.com/post/2022/sa2022-06/ (Vendor Advisory)

Frequently asked questions

What is CVE-2022-1881?: CVE-2022-1881 is a medium-severity vulnerability in Octopus Server, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2022-07-15.
How severe is CVE-2022-1881?: Medium severity. CVSS v3 base score is 5.3 out of 10.