CVE-2021-27228: An issue was discovered in Shinobi through ocean version 1

Q: How do I fix CVE-2021-27228?

shinobi pro: upgrade to newer than 1.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-27228 being exploited?

CVE-2021-27228 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-27228 affect?

CVE-2021-27228 affects shinobi pro. Severity is critical (CVSS 9.8). 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 hasOwnProper

Q: How urgent is CVE-2021-27228?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-27228 is a critical-severity flaw (CVSS 9.8) affecting shinobi pro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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/accou

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-798
Published	2021-02-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: shinobi

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-02-22 17:15 UTCPublished CVE record published
2026-06-17 03:44 UTCUpdated Record last modified

shinobi shinobi pro UPGRADE

Affected: <= 1.0

Fixed in: newer than 1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy shinobi-pro || rpm -q shinobi-pro || shinobi-pro --version

2. UPGRADE to newer than 1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade shinobi-pro

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade shinobi-pro

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-27228?

shinobi pro: upgrade to newer than 1.0. Exact commands for each OS are on this page.

Is CVE-2021-27228 being exploited?

CVE-2021-27228 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-27228 affect?

CVE-2021-27228 affects shinobi pro. Severity is critical (CVSS 9.8). 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 hasOwnProper

How urgent is CVE-2021-27228?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

References

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