Gotenberg: Unauthenticated denial of service via echo.Context pool reuse in webhook async goroutine_CVE-2026-42594

{
    "lastseen": "",
    "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.",
    "published": "2026-05-14T15:32:32.308Z",
    "modified": "2026-05-14T15:32:32.308Z",
    "type": "cve",
    "title": "Gotenberg: Unauthenticated denial of service via echo.Context pool reuse in webhook async goroutine",
    "source": "GitHub_M",
    "references": "https://github.com/gotenberg/gotenberg/security/advisories/GHSA-r33j-c622-r6qp",
    "id": "CVE-2026-42594",
    "bulletinFamily": "",
    "cwe": [
        "CWE-362"
    ],
    "cvelist": null,
    "sourceData": "gotenberg gotenberg < 8.32.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "gotenberg",
    "version": "< 8.32.0",
    "vendor": "gotenberg",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}