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

Quick assessment

Affected
gotenberg gotenberg
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Gotenberg是Gotenberg开源的一个开发人员友好的 API。用于将多种文档格式转换为 PDF 文件。 Gotenberg 8.30.1及之前版本存在参数注入漏洞，该漏洞源于元数据写入端点未对元数据值进行清理，可能导致未经身份验证的攻击者通过换行符注入任意ExifTool伪标签，重命名或移动PDF文件、覆盖任意文件或创建符号链接和硬链接。

CVSS 10.0 · Critical EPSS 2.09% · P81

Affected Version Matrix 1

VendorProduct Version RangeStatus
gotenberg gotenberg <= 8.30.1 affected
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I. Basic Information for CVE-2026-40281

Vulnerability Information
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Vulnerability Title
Gotenberg vulnerable to argument injection via newlines in ExifTool metadata values
Source: CVE Program / CVE List V5
Vulnerability Description
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 arguments, allowing injection of arbitrary ExifTool pseudo-tags such as -FileName, -Directory, -SymLink, and -HardLink. This is a bypass of the incomplete key-sanitization fix introduced in v8.30.1. An unauthenticated attacker can rename or move any PDF being processed to an arbitrary path in the container filesystem, overwrite arbitrary files, or create symlinks and hard links at arbitrary paths.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5
Vulnerability Title
Gotenberg 参数注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gotenberg是Gotenberg开源的一个开发人员友好的 API。用于将多种文档格式转换为 PDF 文件。 Gotenberg 8.30.1及之前版本存在参数注入漏洞，该漏洞源于元数据写入端点未对元数据值进行清理，可能导致未经身份验证的攻击者通过换行符注入任意ExifTool伪标签，重命名或移动PDF文件、覆盖任意文件或创建符号链接和硬链接。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
gotenberg gotenberg <= 8.30.1 -

II. Public POCs for CVE-2026-40281

# POC Description Source Link Shenlong Link
1 https://github.com/vulhub/vulhub/blob/master/gotenberg/CVE-2026-40281/README.md POC Details
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Qwen3.6-35B-A3B · 9334 chars
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III. Intelligence Information for CVE-2026-40281

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Patches & Fixes for CVE-2026-40281 (1)

Vendor Advisories for CVE-2026-40281 (1)

IV. Related Vulnerabilities

Same product: gotenberg
Same vendor: gotenberg
Same weakness: CWE-88

V. Comments for CVE-2026-40281

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