CVE-2026-42594
Description
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the webhook middleware spawns a goroutine that holds a reference to the request's echo.Context after the synchronous handler returns ErrAsyncProcess and Echo recycles the context back to its sync.Pool. When a concurrent request claims the recycled context, c.Reset() clears the store. If the webhook goroutine reaches hardTimeoutMiddleware at that moment, an unchecked type assertion on a nil store entry panics outside any recover() scope, crashing the Gotenberg process. Any anonymous caller reaches the webhook path (default webhook-deny-list filters only the webhook destination, not the submitter). A single-source stress of ~24 webhook requests plus ~60 GET /version requests crashes the process in about two seconds. This vulnerability is fixed in 8.32.0.
How to fix
- thecodingmachine gotenberg8.32.0 or later
- github.com/gotenberg/gotenberg/v88.32.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| thecodingmachine gotenberg | v < 8.32.0 | 8.32.0 |
| github.com/gotenberg/gotenberg/v8Go | v < 8.32.0 | 8.32.0 |
| github.com/gotenberg/gotenberg/v7Go | No range specified | — |
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