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.
Metrics
Affected Vendors & Products
References
History
Wed, 10 Jun 2026 21:45:00 +0000
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Knplabs
Knplabs snappy |
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| Vendors & Products |
Knplabs
Knplabs snappy |
Wed, 10 Jun 2026 20:00:00 +0000
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| 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 |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-10T19:52:59.944Z
Reserved: 2026-05-15T20:11:54.584Z
Link: CVE-2026-46643
No data.
Status : Deferred
Published: 2026-06-10T20:17:28.880
Modified: 2026-06-10T20:21:20.207
Link: CVE-2026-46643
No data.
OpenCVE Enrichment
Updated: 2026-06-10T21:30:36Z