CVE-2026-45742 (GCVE-0-2026-45742)

Vulnerability from cvelistv5 – Published: 2026-08-19 14:34 – Updated: 2026-08-19 15:29
VLAI
Title
Gotenberg: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Summary
Gotenberg is a Docker-powered stateless API for PDF files. From 8.10.0 until 8.33.0, the newContext function in pkg/modules/api/context.go starts one errgroup.Go goroutine for each multipart downloadFrom entry and allows those goroutines to concurrently write to the shared ctx.files, ctx.diskToOriginal, and ctx.filesByField maps and slices. Go maps and slices are not safe for concurrent mutation, so a crafted multipart request containing many downloadFrom entries can trigger a data race and terminate the process with a fatal concurrent map writes runtime error. The default configuration enables downloadFrom and disables authentication, allowing an unauthenticated remote attacker to crash an exposed conversion service and cause a denial of service. This issue is fixed in version 8.33.0.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 15:29 UTC
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
gotenberg gotenberg Affected: >= 8.10.0, < 8.33.0
Create a notification for this product.
Show details on NVD website

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                "id": "CVE-2026-45742",
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                "timestamp": "2026-08-19T15:29:09.140356Z",
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            "url": "https://github.com/gotenberg/gotenberg/security/advisories/GHSA-vp73-vjw8-8f32"
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            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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    "dateReserved": "2026-05-13T06:54:34.220Z",
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