{"id":"CVE-2026-49260","summary":"PhpWeasyPrint: shell command injection via configurable WeasyPrint binary path due to inverted is_executable() guard (mirror of KnpLabs/snappy GHSA-vpr4-p6fq-85jc)","details":"PhpWeasyPrint is a PHP library allowing PDF generation from a URL or an HTML page. Prior to version 2.5.1, `pontedilana/php-weasyprint` builds the shell command for WeasyPrint by passing the binary path through `escapeshellarg()` first and then checking the *quoted* result with `is_executable()`. On POSIX `escapeshellarg('/usr/local/bin/weasyprint')` returns `'/usr/local/bin/weasyprint'` with the single-quote characters as part of the string, so `is_executable()` looks for a file whose actual name includes those quotes. That file never exists, the \"safe\" branch is dead code, and the raw `$binary` string (set via the constructor or `setBinary()`) flows directly into `Symfony\\Component\\Process\\Process::fromShellCommandline()`. Any deployment whose binary path is sourced from configuration, an environment variable, or a per-tenant setting reaches a shell-command-injection sink. The library is documented as a one-to-one substitute for KnpLabs/snappy and inherited the exact pre-fix codepath KnpLabs patched in GHSA-vpr4-p6fq-85jc. PhpWeasyPrint version 2.5.1 contains a patch for the issue.","aliases":["GHSA-f5gc-qxf8-mh9g"],"modified":"2026-07-15T01:49:03.833651414Z","published":"2026-06-19T16:59:01.208Z","related":["GHSA-f5gc-qxf8-mh9g","GHSA-vpr4-p6fq-85jc"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-78"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49260.json"},"references":[{"type":"WEB","url":"https://github.com/pontedilana/php-weasyprint/releases/tag/2.5.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49260.json"},{"type":"ADVISORY","url":"https://github.com/KnpLabs/snappy/security/advisories/GHSA-vpr4-p6fq-85jc"},{"type":"ADVISORY","url":"https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-f5gc-qxf8-mh9g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49260"},{"type":"FIX","url":"https://github.com/pontedilana/php-weasyprint/commit/9e86a2b317237fc5728f712f5037164530117f7e"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pontedilana/php-weasyprint","events":[{"introduced":"0"},{"fixed":"9e86a2b317237fc5728f712f5037164530117f7e"},{"fixed":"48f702a58f8861aea3262cddb2298b3d434204b0"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.5.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["2.5.0","2.4.0","2.3.0","2.2.0","2.1.0","2.0.0","1.5.0","1.4.0","1.3.0","1.2.0","1.1.1","1.1.0","1.0.1","1.0.0","0.13.0","0.12.0","0.11.0","0.10.1","0.10.0","0.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49260.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"}]}