ActiveRecord::Tenanted::Storage::DiskService#path_for has a possible path traversal

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

2.3 · CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N · score source

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Summary Active Record Tenanted's override of Active Storage's DiskService#pathfor 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.

Published by the source

29 Jul 2026, 17:06 UTC

Last modified by the source

29 Jul 2026, 17:15 UTC

Source last checked

26 Oct 2026, 15:52 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-pmwx-rm49-xv39

2. Revision 2 · amended · 25 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-pmwx-rm49-xv39

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# Patch Next advisory brief: GHSA-pmwx-rm49-xv39

Advisory: ActiveRecord::Tenanted::Storage::DiskService#path_for has a possible path traversal
IDs: GHSA-pmwx-rm49-xv39
Record: https://patchnext.com/advisories/ghsa-pmwx-rm49-xv39 (revision 3, source checked 26 Oct 2026, 15:52 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 2.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: activerecord-tenanted 0.7.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- RubyGems activerecord-tenanted: affected < 0.7.0; fixed in 0.7.0

## Suggested inspection (read-only)
- RubyGems activerecord-tenanted: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on activerecord-tenanted.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-pmwx-rm49-xv39 (OSV record GHSA-pmwx-rm49-xv39 lists affected ranges: RubyGems activerecord-tenanted >=0 <0.7.0 (fixed))
- Verified: https://github.com/advisories/GHSA-pmwx-rm49-xv39 (GitHub-reviewed advisory GHSA-pmwx-rm49-xv39 lists affected ranges: RubyGems activerecord-tenanted >=0 <0.7.0)

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