CVE-2026-40505— MuPDF < 1.27 mutool ANSI Injection via Metadata
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I. Basic Information for CVE-2026-40505
Vulnerability Information
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Vulnerability Title
MuPDF < 1.27 mutool ANSI Injection via Metadata
Source: NVD (National Vulnerability Database)
Vulnerability Description
MuPDF before 1.27 contains an ANSI injection vulnerability in mutool that allows attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata fields. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to terminal output when running mutool info, enabling them to manipulate terminal display for social engineering attacks such as presenting fake prompts or spoofed commands.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
转义、元或控制序列转义处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
MuPDF 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MuPDF是MuPDF开源的一款以 C 语言编写的自由及开放源代码软件库。用以渲染页面为位图，但也提供对其他操作诸如搜索和列举目录和链接的支持。 MuPDF存在安全漏洞，该漏洞源于未在将PDF元数据字段写入终端输出前进行清理，允许攻击者通过特制的PDF元数据注入任意ANSI转义序列，可能用于社会工程攻击。
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)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Artifex Software Inc. | MuPDF | 0 ~ 1.27.0 | - |
II. Public POCs for CVE-2026-40505
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same weakness: CWE-150
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OpenClaw 2026.2.13 < 2026.3.25 - ANSI Escape Sequence Inject - CVE-2026-3108
Terminal Escape Injection in mmctl Report Posts Command
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