Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to version 1.7.1, on POSIX, escapeshellarg(‘/usr/bin/wkhtmltopdf’) returns the literal string ‘/usr/bin/wkhtmltopdf’ with the single-quote characters included. is_executable() then looks for a file whose actual name contains those quote characters, which essentially never exists. The safe branch is dead code and $command always falls through to the raw, unescaped value. The rest of the arguments (options, input, output) are escaped correctly, so injection has to land in the binary string itself. That happens whenever the binary path is sourced from configuration that is user-influenced, derived from environment variables that ultimately come from request data, or concatenated with any user-controlled fragment. This issue has been patched in version 1.7.1.

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Source ID Title
Github GHSA Github GHSA GHSA-vpr4-p6fq-85jc Snappy: Binary path is never shell-escaped due to an inverted is_executable check
Fixes

Solution

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Workaround

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History

Wed, 10 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Knplabs
Knplabs snappy
Vendors & Products Knplabs
Knplabs snappy

Wed, 10 Jun 2026 20:00:00 +0000

Type Values Removed Values Added
Description Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to version 1.7.1, on POSIX, escapeshellarg(‘/usr/bin/wkhtmltopdf’) returns the literal string ‘/usr/bin/wkhtmltopdf’ with the single-quote characters included. is_executable() then looks for a file whose actual name contains those quote characters, which essentially never exists. The safe branch is dead code and $command always falls through to the raw, unescaped value. The rest of the arguments (options, input, output) are escaped correctly, so injection has to land in the binary string itself. That happens whenever the binary path is sourced from configuration that is user-influenced, derived from environment variables that ultimately come from request data, or concatenated with any user-controlled fragment. This issue has been patched in version 1.7.1.
Title Snappy: Binary path is never shell-escaped due to an inverted is_executable check
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-10T19:52:59.944Z

Reserved: 2026-05-15T20:11:54.584Z

Link: CVE-2026-46643

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-06-10T20:17:28.880

Modified: 2026-06-10T20:21:20.207

Link: CVE-2026-46643

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T21:30:36Z

Weaknesses