CVE-2026-42594

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/gotenberg/gotenberg/security/advisories/GHSA-r33j-c622-r6qp	Exploit Mitigation Vendor Advisory
https://github.com/gotenberg/gotenberg/security/advisories/GHSA-r33j-c622-r6qp	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:thecodingmachine:gotenberg:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-14 16:16

Updated : 2026-06-17 10:48

NVD link : CVE-2026-42594

Mitre link : CVE-2026-42594

CVE.ORG link : CVE-2026-42594

JSON object : View

Products Affected

thecodingmachine

gotenberg

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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