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CVE-2026-46529— PDF /GoToR action argv injection enables single-click RCE via --gtk-module dlopen

Quick assessment

Affected
mate-desktop atril
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.

Atril是MATE Desktop开源的一个简单的多页文档查看器。 Atril 1.26.3之前版本和1.28.4之前版本存在命令注入漏洞，该漏洞源于shell/ev-application.c中ev_spawn函数构建命令行时未应用g_shell_quote，可能导致攻击者通过诱骗用户点击恶意PDF文档中的链接实现远程代码执行。

CVSS 8.4 · High EPSS 0.41% · P35

Affected Version Matrix 2

VendorProduct Version RangeStatus
mate-desktop atril < 1.26.3 affected
>= 1.27.0, < 1.28.4 affected
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I. Basic Information for CVE-2026-46529

Vulnerability Information
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Vulnerability Title
PDF /GoToR action argv injection enables single-click RCE via --gtk-module dlopen
Source: CVE Program / CVE List V5
Vulnerability Description
Atril Document Viewer is the default document reader of the MATE desktop environment for Linux. A single-click remote code execution vulnerability in versions prior to 1.26.3 and 1.28.4 allows an attacker to achieve arbitrary code execution as the user by tricking them into clicking a link inside a malicious PDF document. The PDF can be packaged as a polyglot file that is simultaneously a valid PDF and a valid ELF shared library, making the attack a single-file, single-click, configuration-independent RCE on stock atril installations. The root cause is `shell/ev-application.c:ev_spawn`, which builds a command line from attacker-controlled PDF link-destination fields without applying `g_shell_quote`. The cmdline is then handed to `g_app_info_create_from_commandline`, which shell-parses it back into argv — splitting any embedded `--gtk-module=PATH` into a separate argv element. GTK then `dlopen()`s the path during init, running any `__attribute__((constructor))` it finds. Versions 1.26.3 and 1.28.4 contain a patch for the issue. This is the same defect class as CVE-2023-51698 (CBT `--checkpoint-action` injection in `comics-document.c`, fixed in 1.6.2) but in a different code path (`shell/ev-application.c`) that the original patch did not touch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Atril 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Atril是MATE Desktop开源的一个简单的多页文档查看器。 Atril 1.26.3之前版本和1.28.4之前版本存在命令注入漏洞，该漏洞源于shell/ev-application.c中ev_spawn函数构建命令行时未应用g_shell_quote，可能导致攻击者通过诱骗用户点击恶意PDF文档中的链接实现远程代码执行。
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
mate-desktop atril < 1.26.3 -

II. Public POCs for CVE-2026-46529

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 11021 chars
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III. Intelligence Information for CVE-2026-46529

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Vendor Advisories for CVE-2026-46529 (1)

Vendor Pages for CVE-2026-46529 (1)

IV. Related Vulnerabilities

Same product: atril
Same vendor: mate-desktop
Same weakness: CWE-77

V. Comments for CVE-2026-46529

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