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CVE-2021-27228

28
FAUCET Score

CVE-2021-27228 is a critical access control vulnerability affecting Shinobi and Shinobi Pro through ocean version 1. It allows an unauthenticated attacker to bypass API key validation by exploiting JavaScript prototype method names, gaining complete access to user, admin, and super API functions. With a CVSS score of 9.8, this vulnerability presents a severe risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While no active exploitation or public exploit code has been identified, and community discussion is minimal, organizations using affected Shinobi versions should prioritize patching.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0CPE matchmatch criteria
cpe:2.3:a:shinobi:shinobi_pro:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.60%
Probability of exploitation in next 30 days
EPSS Percentile
73.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0160 is in the 61st percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gitlab.com / Shinobi-Systems/Shinobi/-/merge_requests/286
PatchThird Party Advisory
gitlab.com / Shinobi-Systems/Shinobi/-/tags
PatchThird Party Advisory
shinobi.video
Product