Summary
ActiveRecord::Tenanted::Storage::DiskService#path_for has a possible path traversal
Active Record Tenanted's override of Active Storage's DiskService#path_for does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path traversal sequences (e.g. ../) is used, it could allow reading, writing, or deleting arbitrary files on the server. Blob keys are expected to be trusted strings, but some applications could be passing user input as keys and would be affected.
Mitigation
Upgrade to Active Record Tenanted v0.7.0 or later.
As a workaround, do not use untrusted user input as blob keys. Blob keys are expected to be trusted strings.
Credit
This issue was responsibly reported by @tonghuaroot.
Impact
Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files. Typical impact: unauthorized file read or write outside the intended directory.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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Frequently Asked Questions
- What is GHSA-PMWX-RM49-XV39? GHSA-PMWX-RM49-XV39 is a low-severity path traversal vulnerability in activerecord-tenanted (rubygems), affecting versions < 0.7.0. It is fixed in 0.7.0. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.
- Which versions of activerecord-tenanted are affected by GHSA-PMWX-RM49-XV39? activerecord-tenanted (rubygems) versions < 0.7.0 is affected.
- Is there a fix for GHSA-PMWX-RM49-XV39? Yes. GHSA-PMWX-RM49-XV39 is fixed in 0.7.0. Upgrade to this version or later.
- Is GHSA-PMWX-RM49-XV39 exploitable, and should I be worried? Whether GHSA-PMWX-RM49-XV39 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-PMWX-RM49-XV39 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-PMWX-RM49-XV39? Upgrade
activerecord-tenantedto 0.7.0 or later.