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CVE-2026-107802— SumatraPDF — Windows command-line argument injection in AI selection-translate

Quick assessment

Affected
sumatrapdfreader sumatrapdf
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SumatraPDF 是一款适用于 Windows 的多格式文档阅读器。在版本 3.6.1 及更早版本中， 在将选定或粘贴的翻译文本嵌入带引号的 Windows 命令行时，仅使用了不完整的引号转义机制。受影响函数 、 和 允许攻击者注入由用户控制的文本，从而在已安装并使用的相应代理式命令行接口（CLI）后端中注入模型参数、工作目录参数、审批标志或绕过沙箱的标志。除漏洞公告所述的条件外，未声称存在更广泛的影响。截至本次审查时，尚无修复版本可用。

CVSS 7.1 · High
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I. Basic Information for CVE-2026-107802

Vulnerability Information
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Vulnerability Title
SumatraPDF — Windows command-line argument injection in AI selection-translate
Source: CVE Program / CVE List V5
Vulnerability Description
SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, src/SelectionTranslate.cpp embeds selected or pasted translation text in quoted Windows command lines using incomplete quote-only escaping. The affected BuildGrokTranslateCmdLineTemp(), BuildClaudeTranslateCmdLineTemp(), and BuildCodexTranslateCmdLineTemp() functions can allow attacker-controlled text to inject model, working-directory, approval, or sandbox-bypass flags when the corresponding agentic CLI backend is installed and used. No broader impact is claimed beyond the advisory-supported conditions. No fixed version is available as of this review.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sumatrapdfreader sumatrapdf <= 3.6.1 -

II. Public POCs for CVE-2026-107802

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III. Intelligence Information for CVE-2026-107802

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Patches & Fixes for CVE-2026-107802 (1)

Other References for CVE-2026-107802 (1)

Same Patch Batch · sumatrapdfreader · 2026-10-08 · 11 CVEs total

CVE-2026-107732 8.4 HIGH SumatraPDF: Markup/command-link injection into UI notification text
CVE-2026-107734 7.1 HIGH SumatraPDF: SyncTeX Argument Injection in Inverse Search Enables Arbitrary Command Executi
CVE-2026-107733 6.8 MEDIUM SumatraPDF: Null-pointer dereference in `CmdExec` when no document tab is open
CVE-2026-107736 6.8 MEDIUM SumatraPDF: stack buffer overflow while processing EXIF Orientation metadata
CVE-2026-107738 6.8 MEDIUM SumatraPDF: Untrusted binary record offset used without lower-bound validation
CVE-2026-107737 5.7 MEDIUM SumatraPDF CHM `its://` signed index causes an out-of-bounds object lookup
CVE-2026-107731 5.5 MEDIUM SumatraPDF: LIT parser range-validation flaws cause invalid-pointer reads and denial of se
CVE-2026-107729 5.5 MEDIUM SumatraPDF: Unsigned-to-signed hdrLen validation bypass in SumatraPDF MOBI parsing causes
CVE-2026-107730 5.5 MEDIUM SumatraPDF: Signed integer overflow in the LIT header parsing causes invalid-pointer read
CVE-2026-107735 5.4 MEDIUM SumatraPDF: `sumatrapdfrestrict.ini` never revokes any permission (fail-open policy initia

IV. Related Vulnerabilities

Same product: sumatrapdf
Same vendor: sumatrapdfreader
Same weakness: CWE-88

V. Comments for CVE-2026-107802

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