CVE-2026-107802

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.

CVSS 4.0

7.1CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)

CWE

CWE-88

Published

2026-10-08

Modified

2026-10-09

Record from

the NVD, synced 2026-10-19

References

• https://github.com/sumatrapdfreader/sumatrapdf/commit/6b88a751ab34a28bafca3bdd635aaa2f4c1e06b6
• https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-xvxg-cwmx-hr7j
• https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-xvxg-cwmx-hr7j

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