Hardens Active Storage handling on Rails 7.1 by filtering internal
direct-upload metadata keys and limiting proxy range requests, while
keeping audio playback on redirect URLs so large recordings are not
routed through the proxy limiter.
Closes
- CVE-2026-33173
- CVE-2026-33174
- CVE-2026-33658
Why
Rails 7.1 does not currently have patched releases for these Active
Storage advisories, and Chatwoot exposes Active Storage direct-upload
endpoints and media URLs. This keeps the Rails dependency unchanged
while adding small local mitigations until Rails can be upgraded to
7.2.3.1+.
What changed
- Filters `identified`, `analyzed`, and `composed` from direct-upload
blob metadata.
- Limits Active Storage proxy range requests to one range under 100 MB.
- Uses redirect URLs for inline audio attachments so normal playback of
large recordings avoids the proxy streaming path.
- Adds scoped bundle-audit ignores for the locally mitigated Active
Storage advisories and the remaining Rails advisories that are not
reachable through current Chatwoot usage.
How to test
- Upload an attachment from the dashboard reply composer and confirm it
sends successfully.
- Upload an attachment from the website widget and confirm it appears in
the conversation.
- POST a direct-upload request with `blob.metadata.identified`,
`blob.metadata.analyzed`, and `blob.metadata.composed`; confirm those
keys are not persisted while custom metadata remains.
- Play an audio/call-recording attachment and confirm the audio URL
loads through Active Storage redirect rather than proxy.
- Run `bundle exec bundle audit check -v`.
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Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
