CVE-2026-46643
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
The Snappy library in versions prior to 1.7.1 has an issue with improper processing of binary paths, which can lead to code injection. The escapeshellarg function does not work correctly, allowing for the use of unsafe input.
Risk Assessment
Organizations may be exposed to injection attacks, potentially leading to unauthorized code execution on the server. Exploiting this vulnerability could result in serious security implications for the system.
Recommendation
It is recommended to update the Snappy library to version 1.7.1 or later to mitigate this vulnerability. Additionally, configurations that may influence binary paths should be reviewed.
Original NVD description (English source)
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.