Gotenberg: SSRF via LibreOffice document processing

Summary Server-Side Request Forgery SSRF vulnerability affecting the /forms/libreoffice/convert endpoint in Gotenberg v8.33.0 running with the default configuration. By uploading a specially crafted DOCX document, an attacker can cause LibreOffice to automatically retrieve external resources duri...

PT-2026-50731

Name of the Vulnerable Software and Affected Versions Gotenberg version 8.33.0 Description A Server-Side Request Forgery SSRF issue exists in the /forms/libreoffice/convert endpoint. By uploading a specially crafted DOCX document, an attacker can force LibreOffice to retrieve external resources...

CVE-2026-42597

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the /forms/chromium/convert/url and /forms/chromium/screenshot/url routes accept url=file:///tmp/... from anonymous callers. The default Chromium deny-list intentionally exempts file:///tmp/ so HTML/Markdown routes can lo...

CVE-2026-42593

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, pdfengines/merge, pdfengines/split, libreoffice/convert, chromium/convert/url, chromium/convert/html, and chromium/convert/markdown accept stampSource=pdf + stampExpression=/path and watermarkSource=pdf +...

CVE-2026-42592

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, FilterOutboundURL resolves the hostname, checks the resolved IPs against the private-address deny-list, and returns only the error. It discards the resolved addresses. Chromium later performs its own DNS resolution when i...

CVE-2026-42591

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the LibreOffice conversion endpoint /forms/libreoffice/convert passes uploaded documents directly to LibreOffice without inspecting their content. LibreOffice then fetches any embedded external URLs on its own, completely...

CVE-2026-42595

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, Gotenberg's Chromium URL-to-PDF endpoint /forms/chromium/convert/url has no default protection against HTTP/HTTPS-based SSRF. The default deny-list regex only blocks file:// URIs. An unauthenticated attacker can point...

CVE-2026-42589

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg's /forms/pdfengines/metadata/write HTTP endpoint accepts a JSON metadata object and passes its keys directly to ExifTool via the go-exiftool library. No validation is performed on key characters. A \n embedded i...

CVE-2026-40281

Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint validates metadata keys for control characters but leaves metadata values unsanitized. A newline character in a metadata value splits the ExifTool stdin line into two separate...

CVE-2026-40893

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg only checks if the tag is exactly FileName, so System:FileName slips right through and ExifTool happily renames the file. This allows remote attackers to move, rename, and change permissions for arbitrary files...

Exploit for OS Command Injection in Thecodingmachine Gotenberg

POCCVE-2026-42589 Local reproduction lab and nuclei template...

GHSA-VP73-VJW8-8F32 Gotenberg has a Race Condition via Multipart `downloadFrom` Handling

Summary Gotenberg is vulnerable to a remote denial of service in multipart downloadFrom handling. A multipart request containing multiple downloadFrom entries causes concurrent goroutines to write to shared maps without synchronization. This can terminate the process with fatal error: concurrent...

GHSA-HWC4-GMRW-5222 Gotenberg has path traversal in zip entry name via Windows-style separators in upload filename

Summary filepath.Base on the Linux container does not strip backslashes , because \ is only a path separator on Windows. A multipart filename like ........\Windows\System32\evil.pdf survives Gotenberg's input sanitisation and lands verbatim as the zip entry name when a multi-output route...

CVE-2026-45742

creationtimestamp| type| source ---|---|--- 2026-05-29 16:12:10+00:00| published-proof-of-concept| https://github.com/gotenberg/gotenberg/security/advisories/GHSA-vp73-vjw8-8f32...

PT-2026-45015

Name of the Vulnerable Software and Affected Versions Gotenberg versions 8.10.0 through 8.x Description Gotenberg is susceptible to a remote denial of service due to a race condition when handling multipart requests. When a request contains multiple downloadFrom entries, the system initiates...

GO-2026-4990 Gotenberg's DNS rebinding bypasses SSRF validation on Chromium URL conversion routes in github.com/gotenberg/gotenberg

Gotenberg's DNS rebinding bypasses SSRF validation on Chromium URL conversion routes in github.com/gotenberg/gotenberg...

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...

CVE-2026-42596

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker can supply URLs such as...

CVE-2026-42590

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.30.0, The ExifTool metadata write blocklist in Gotenberg can be bypassed using ExifTool's group-prefix syntax, enabling arbitrary file rename, move, hardlink, and symlink creation on the server. ExifTool supports group-prefix...

Server-side Request Forgery (SSRF)

Overview github.com/gotenberg/gotenberg/v7/pkg/modules/chromium is a Docker-powered stateless API for PDF files. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the chromium/convert/url endpoint due to insufficient validation of redirect destinations agains...