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CVE-2023-37266

45
FAUCET Score

CVE-2023-37266 is a critical authentication bypass vulnerability affecting CasaOS versions prior to 0.4.4, allowing unauthenticated attackers to forge JSON Web Tokens (JWTs). This flaw enables unauthorized access to authenticated features and arbitrary root command execution on affected CasaOS instances. With a CVSS score of 9.8 (Critical), the attack requires no user interaction or privileges, making it easily exploitable with high impact on confidentiality, integrity, and availability. While not listed on KEV, a Nuclei template exists, and the vulnerability has garnered significant community discussion, indicating potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.4.4CPE matchmatch criteria
cpe:2.3:o:icewhale:casaos:*:*:*:*:*:*:*:*

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
6.79%
Probability of exploitation in next 30 days
EPSS Percentile
93.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Nuclei: CVE-2023-37266 · Jul 27, 2023
This CVE's current EPSS score of 0.0679 is in the 88th percentile among its peer group of 36,835 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

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/IceWhaleTech/CasaOSFixed in: 0.4.4

Vendor Advisories (1)

goGHSA-m5q5-8mfw-p2hrcritical

CasaOS contains weak JWT secrets

Jul 17, 2023

References

github.com / IceWhaleTech/CasaOS/commit/705bf1facbffd2ca40b159b0303132b6fdf657ad
Patch
github.com / IceWhaleTech/CasaOS/security/advisories/GHSA-m5q5-8mfw-p2hr
PatchThird Party Advisory
sonarsource.com / blog/security-vulnerabilities-in-casaos
ExploitThird Party Advisory