Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Thecodingmachine | Gotenberg | < 8.32.0 |
Related Weaknesses (CWE)
References
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-r33j-c622-r6qpExploitMitigationVendor Advisory
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-r33j-c622-r6qpExploitMitigationVendor Advisory
FAQ
What is CVE-2026-42594?
CVE-2026-42594 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2026-42594?
CVE-2026-42594 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42594?
Check the references section above for vendor advisories and patch information. Affected products include: Thecodingmachine Gotenberg.