CVE-2023-32322: Ombi is an open source application which allows users to request specific media from popular self-hosted streaming servers. Versions prior to 4.38.2 c...

Description

Ombi is an open source application which allows users to request specific media from popular self-hosted streaming servers. Versions prior to 4.38.2 contain an arbitrary file read vulnerability where an Ombi administrative user may access files available to the Ombi server process on the host operating system. Ombi administrators may not always be local system administrators and so this may violate the security expectations of the system. The arbitrary file read vulnerability was present in `ReadLogFile` and `Download` endpoints in `SystemControllers.cs` as the parameter `logFileName` is not sanitized before being combined with the `Logs` directory. When using `Path.Combine(arg1, arg2, arg3)`, an attacker may be able to escape to folders/files outside of `Path.Combine(arg1, arg2)` by using ".." in `arg3`. In addition, by specifying an absolute path for `arg3`, `Path.Combine` will completely ignore the first two arguments and just return just `arg3`. This vulnerability can lead to information disclosure. The Ombi `documentation` suggests running Ombi as a Service with Administrator privileges. An attacker targeting such an application may be able to read the files of any Windows user on the host machine and certain system files. This issue has been addressed in commit `b8a8f029` and in release version 4.38.2. Users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as GHSL-2023-088.

Metrics

CVSS 3.1

4.9/10

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

EPSS Probability

2.14%

79.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ombi	Ombi	< 4.38.2

References

https://docs.ombi.app/guides/installation/#windowsProduct
https://github.com/Ombi-app/Ombi/blob/v4.36.1/src/Ombi/Controllers/V2/SystemController.cs#L46Product
https://github.com/Ombi-app/Ombi/blob/v4.36.1/src/Ombi/Controllers/V2/SystemController.cs#L58Product
https://github.com/Ombi-app/Ombi/commit/b8a8f029d80454d582bc4a2a05175106809335d0Patch
https://github.com/Ombi-app/Ombi/security/advisories/GHSA-28j3-84m7-gpjpExploit, Mitigation, Third Party Advisory
https://docs.ombi.app/guides/installation/#windowsProduct
https://github.com/Ombi-app/Ombi/blob/v4.36.1/src/Ombi/Controllers/V2/SystemController.cs#L46Product
https://github.com/Ombi-app/Ombi/blob/v4.36.1/src/Ombi/Controllers/V2/SystemController.cs#L58Product
https://github.com/Ombi-app/Ombi/commit/b8a8f029d80454d582bc4a2a05175106809335d0Patch
https://github.com/Ombi-app/Ombi/security/advisories/GHSA-28j3-84m7-gpjpExploit, Mitigation, Third Party Advisory

Timeline

Published: May 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-32322?

Ombi is an open source application which allows users to request specific media from popular self-hosted streaming servers. Versions prior to 4.38.2 contain an arbitrary file read vulnerability where an Ombi administrative user may access files available to the Ombi server process on the host operating system. Ombi administrators may not always be local system administrators and so this may violate the security expectations of the system. The arbitrary file read vulnerability was present in `ReadLogFile` and `Download` endpoints in `SystemControllers.cs` as the parameter `logFileName` is not sanitized before being combined with the `Logs` directory. When using `Path.Combine(arg1, arg2, arg3)`, an attacker may be able to escape to folders/files outside of `Path.Combine(arg1, arg2)` by using ".." in `arg3`. In addition, by specifying an absolute path for `arg3`, `Path.Combine` will completely ignore the first two arguments and just return just `arg3`. This vulnerability can lead to information disclosure. The Ombi `documentation` suggests running Ombi as a Service with Administrator privileges. An attacker targeting such an application may be able to read the files of any Windows user on the host machine and certain system files. This issue has been addressed in commit `b8a8f029` and in release version 4.38.2. Users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as GHSL-2023-088.

How severe is CVE-2023-32322?

CVE-2023-32322 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 2.14% probability of exploitation in the next 30 days.

How do I fix CVE-2023-32322?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.