Gotenberg is a Docker-powered stateless API for PDF files. In 8.32.0 and earlier, filename handling in pkg/modules/api/context.go uses filepath.Base on Linux, which does not treat backslashes as path separators, so a multipart filename containing Windows-style parent directory components survives sanitization. The original filename flows through ctx.diskToOriginal and the multi-output PDF routes into archives.FilesFromDisk and archives.Zip.Archive as the generated zip entry name. A remote attacker can submit a name such as ........\Windows\System32\evil.pdf through an upload or an upstream downloadFrom Content-Disposition header, and a Windows archive extractor can write the resulting file outside the intended extraction directory. The affected paths include /forms/pdfengines/split and other multi-output PDF, LibreOffice, and conversion routes, and exploitation can cause arbitrary file writes on a downstream Windows system when a user or process extracts the returned archive. This issue is fixed in version 8.33.0.
Metrics
Affected Vendors & Products
References
History
Wed, 19 Aug 2026 19:30:00 +0000
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ssvc
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Wed, 19 Aug 2026 16:15:00 +0000
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Gotenberg
Gotenberg gotenberg |
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Gotenberg
Gotenberg gotenberg |
Wed, 19 Aug 2026 14:45:00 +0000
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| Description | Gotenberg is a Docker-powered stateless API for PDF files. In 8.32.0 and earlier, filename handling in pkg/modules/api/context.go uses filepath.Base on Linux, which does not treat backslashes as path separators, so a multipart filename containing Windows-style parent directory components survives sanitization. The original filename flows through ctx.diskToOriginal and the multi-output PDF routes into archives.FilesFromDisk and archives.Zip.Archive as the generated zip entry name. A remote attacker can submit a name such as ........\Windows\System32\evil.pdf through an upload or an upstream downloadFrom Content-Disposition header, and a Windows archive extractor can write the resulting file outside the intended extraction directory. The affected paths include /forms/pdfengines/split and other multi-output PDF, LibreOffice, and conversion routes, and exploitation can cause arbitrary file writes on a downstream Windows system when a user or process extracts the returned archive. This issue is fixed in version 8.33.0. | |
| Title | Gotenberg: Path traversal in zip entry name via Windows-style separators in upload filename | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-19T18:19:27.164Z
Reserved: 2026-05-07T21:21:48.351Z
Link: CVE-2026-44829
Updated: 2026-08-19T18:03:44.171Z
Status : Received
Published: 2026-08-19T15:17:02.630
Modified: 2026-08-19T19:17:16.830
Link: CVE-2026-44829
No data.
OpenCVE Enrichment
Updated: 2026-08-19T18:00:05Z