What’s Vulnerable › Vulnerabilities

CVE-2025-34171: CasaOS <= 0.4.15 Unauthenticated File and Debug Data Exposure

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-02 · updated 2026-10-07
• Weakness: CWE-497

Description

CasaOS versions up to and including 0.4.15 expose multiple unauthenticated endpoints that allow remote attackers to retrieve sensitive configuration files and system debug information. The /v1/users/image endpoint can be abused with a user-controlled path parameter to access files under /var/lib/casaos/1/, which reveals installed applications and configuration details. Additionally, /v1/sys/debug discloses host operating system, kernel, hardware, and storage information. The endpoints also return distinct error messages, enabling file existence enumeration of arbitrary paths on the underlying host filesystem. This information disclosure can be used for reconnaissance and to facilitate targeted follow-up attacks against services deployed on the host.

Affected products

• IceWhaleTech CasaOS-UserService: through 0.4.15

References

• https://casaos.zimaspace.com/
• https://github.com/IceWhaleTech/CasaOS
• https://www.vulncheck.com/advisories/casaos-unauthenticated-file-and-debug-data-exposure

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