What is CVE-2021-27228?

CVE-2021-27228 is a critical-severity vulnerability in Shinobi Pro, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2021-02-22.

How severe is CVE-2021-27228?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Shinobi Pro

CVE-2021-27228

An issue was discovered in Shinobi through ocean version 1. lib/auth.js has Incorrect Access Control. Valid API Keys are held in an internal JS Object. Therefore an attacker can use JS Proto Method names (such as constructor or hasOwnProperty) to convince the System that the supplied API Key exists in the underlying JS object, and consequently achieve complete access to User/Admin/Super API functions, as demonstrated by a /super/constructor/accounts/list URI.

Published 2021-02-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.018 · change: +0.002

Affected products

Shinobi Pro

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

shinobi.video/ (Product)
gitlab.com/Shinobi-Systems/Shinobi/-/tags (Patch, Third Party Advisory)
gitlab.com/Shinobi-Systems/Shinobi/-/merge_requests/286 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-27228?: CVE-2021-27228 is a critical-severity vulnerability in Shinobi Pro, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2021-02-22.
How severe is CVE-2021-27228?: Critical severity. CVSS v3 base score is 9.8 out of 10.