Gotenberg's ExifTool group-prefix syntax bypasses dangerous-tag blocklist

Summary The ExifTool metadata write blocklist in Gotenberg v8 can be bypassed using ExifTool's group-prefix syntax, enabling arbitrary file rename, move, hardlink, and symlink creation on the server. This is a bypass of the fix for GHSA-qmwh-9m9c-h36m. Details The blocklist in...

Incomplete List of Disallowed Inputs

Overview Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs via the metadata process. An attacker can rename, move, or create links to files within the container by submitting specially crafted metadata values that bypass the intended blocklist. This may also...

GHSA-7V3R-M9C8-R855 Gotenberg's ExifTool group-prefix syntax bypasses dangerous-tag blocklist

Summary The ExifTool metadata write blocklist in Gotenberg v8 can be bypassed using ExifTool's group-prefix syntax, enabling arbitrary file rename, move, hardlink, and symlink creation on the server. This is a bypass of the fix for GHSA-qmwh-9m9c-h36m. Details The blocklist in...

Command Injection

Overview Affected versions of this package are vulnerable to Command Injection via the pdfengines/metadata/write endpoint when JSON metadata keys containing newline characters are passed directly to ExifTool without validation. An attacker can execute arbitrary operating system commands by...

GHSA-RQGH-GXV4-6657 Gotenberg has Unauthenticated RCE via ExifTool Metadata Key Injection

Unauthenticated RCE in Gotenberg via Metadata Key Newline Injection Summary 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...

Gotenberg has Unauthenticated RCE via ExifTool Metadata Key Injection

Unauthenticated RCE in Gotenberg via Metadata Key Newline Injection Summary 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...

PT-2026-38381

Name of the Vulnerable Software and Affected Versions Gotenberg versions prior to 8.30.0 Description The ExifTool metadata write blocklist can be bypassed using group-prefix syntax, allowing an attacker to perform arbitrary file rename, move, hardlink, and symlink creation on the server. The...

PT-2026-38380

Name of the Vulnerable Software and Affected Versions Gotenberg versions prior to 8.31.0 Description An unauthenticated remote attacker can achieve OS command execution via the '/forms/pdfengines/metadata/write' endpoint. The application accepts a JSON metadata object and passes its keys to...

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-2026-40281 Gotenberg vulnerable to argument injection via newlines in ExifTool metadata values

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-2026-40281

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-2026-40281

Gotenberg 8.x (

CVE-2026-40281 Gotenberg vulnerable to argument injection via newlines in ExifTool metadata values

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...

Gotenberg 参数注入漏洞

Gotenberg is an open-source, developer-friendly API developed by Gotenberg. It is used to convert various document formats into PDF files. Versions of Gotenberg 8.30.1 and earlier contained a parameter injection vulnerability. This vulnerability stemmed from the fact that the metadata writing...

Arbitrary Argument Injection

Overview exiftool-vendored is an Efficient, cross-platform access to ExifTool Affected versions of this package are vulnerable to Arbitrary Argument Injection via unsanitized input in tag names, filenames, or options passed to the ExifTool process. An attacker can manipulate file access or write...

exiftool-vendored vulnerable to argument injection via newline characters in tag names

Impact exiftool-vendored starts ExifTool in -stayopen True -@ - mode, where arguments are read from stdin one per line. In affected versions, several caller-supplied strings were interpolated into ExifTool arguments without rejecting line delimiters. A newline or carriage return inside one of tho...

GHSA-CW26-7653-2RP5 exiftool-vendored vulnerable to argument injection via newline characters in tag names

Impact exiftool-vendored starts ExifTool in -stayopen True -@ - mode, where arguments are read from stdin one per line. In affected versions, several caller-supplied strings were interpolated into ExifTool arguments without rejecting line delimiters. A newline or carriage return inside one of tho...

GHSA-62P3-HVXX-FXG4 Gotenberg has an ExifTool Dangerous Tag Blocklist Bypass via Group-Prefixed Tag Names that Allows Arbitrary File Rename and Move

Summary Gotenberg blocks certain ExifTool tag names like FileName and Directory to stop attackers from renaming or moving files on the server. But ExifTool allows a longer form of the same tag — System:FileName — which does the exact same thing. Gotenberg only checks if the tag is exactly FileNam...

Gotenberg has an ExifTool Dangerous Tag Blocklist Bypass via Group-Prefixed Tag Names that Allows Arbitrary File Rename and Move

Summary Gotenberg blocks certain ExifTool tag names like FileName and Directory to stop attackers from renaming or moving files on the server. But ExifTool allows a longer form of the same tag — System:FileName — which does the exact same thing. Gotenberg only checks if the tag is exactly FileNam...

PT-2026-37106

Name of the Vulnerable Software and Affected Versions Gotenberg versions prior to 8.31.0 Description Gotenberg fails to properly validate metadata tags passed to ExifTool, a tool used for reading and writing image, audio, and video metadata. While the software blocks specific tags like FileName a...