CVE-2026-46643
published 2026-06-10CVE-2026-46643: 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…
PriorityP340high7.5CVSS 4.0
AVLACLATPPRNUINVCHVIHVAHSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.15%
4.8th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| knplabs | knp-snappy | >= 0 < 1.7.1 | 1.7.1 |
| knplabs | snappy | < 1.7.1 | 1.7.1 |
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VulDB
KnpLabs snappy up to 1.7.0 on POSIX Configuration /usr/bin/wkhtmltopdf is_executable command os command injection (GHSA-vpr4-p6fq-85jc / EUVD-2026-36111)
vuldb·2026-06-10·CVSS 7.5
CVE-2026-46643 [HIGH] KnpLabs snappy up to 1.7.0 on POSIX Configuration /usr/bin/wkhtmltopdf is_executable command os command injection (GHSA-vpr4-p6fq-85jc / EUVD-2026-36111)
A vulnerability was found in KnpLabs snappy up to 1.7.0 on POSIX. It has been rated as critical. This affects the function is_executable of the file /usr/bin/wkhtmltopdf of the component Configuration Handler. Performing a manipulation of the argument command results in os command injection.
This vulnerability is identified as CVE-2026-46643. The attack is only possible with local access. There is not any exploit available.
Upgrading the affected component is advised.
GHSA
Snappy: Binary path is never shell-escaped due to an inverted is_executable check
ghsa·2026-05-21
CVE-2026-46643 [HIGH] CWE-78 Snappy: Binary path is never shell-escaped due to an inverted is_executable check
Snappy: Binary path is never shell-escaped due to an inverted is_executable check
### Impact
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.
#
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-06-10
Published