CVE-2026-49260

{"id": "CVE-2026-49260", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49260", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-22T19:45:10.727602Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.5}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "pontedilana", "product": "php-weasyprint", "versions": [{"status": "affected", "version": "< 2.5.1"}]}]}], "published": "2026-06-19T17:16:29.477", "references": [{"url": "https://github.com/KnpLabs/snappy/security/advisories/GHSA-vpr4-p6fq-85jc", "source": "security-advisories@github.com"}, {"url": "https://github.com/pontedilana/php-weasyprint/commit/9e86a2b317237fc5728f712f5037164530117f7e", "source": "security-advisories@github.com"}, {"url": "https://github.com/pontedilana/php-weasyprint/releases/tag/2.5.1", "source": "security-advisories@github.com"}, {"url": "https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-f5gc-qxf8-mh9g", "source": "security-advisories@github.com"}, {"url": "https://github.com/KnpLabs/snappy/security/advisories/GHSA-vpr4-p6fq-85jc", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-f5gc-qxf8-mh9g", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "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 `$binary` string (set via the constructor or `setBinary()`) flows directly into `Symfony\\Component\\Process\\Process::fromShellCommandline()`. Any deployment whose binary path is sourced from configuration, an environment variable, or a per-tenant setting reaches a shell-command-injection sink. The library is documented as a one-to-one substitute for KnpLabs/snappy and inherited the exact pre-fix codepath KnpLabs patched in GHSA-vpr4-p6fq-85jc. PhpWeasyPrint version 2.5.1 contains a patch for the issue."}, {"lang": "es", "value": "PhpWeasyPrint es una biblioteca PHP que permite la generaci\u00f3n de PDF a partir de una URL o una p\u00e1gina HTML. Antes de la versi\u00f3n 2.5.1, \u201cpontedilana/php-weasyprint\u201d construye el comando de shell para WeasyPrint pasando primero la ruta del binario a trav\u00e9s de \u201cescapeshellarg()\u201d y luego verificando el resultado entrecomillado con \u201cis_executable()\u201d. En POSIX, \u201cescapeshellarg(\u2019/usr/local/bin/weasyprint\u2019)\u201d devuelve \u201c\u2019/usr/local/bin/weasyprint\u2019\u201d con los caracteres de comilla simple como parte de la cadena, por lo que \u201cis_executable()\u201d busca un archivo cuyo nombre real incluye esas comillas. Ese archivo nunca existe, la rama \u2019segura\u2019 es c\u00f3digo muerto, y la cadena \u201c$binary\u201d sin procesar (establecida a trav\u00e9s del constructor o \u201csetBinary()\u201d) fluye directamente hacia \u201cSymfony\\Component\\Process\\Process::fromShellCommandline()\u201d. Cualquier despliegue cuya ruta binaria se obtenga de la configuraci\u00f3n, una variable de entorno o una configuraci\u00f3n por inquilino, alcanza un sumidero de inyecci\u00f3n de comandos de shell. La biblioteca est\u00e1 documentada como un sustituto uno a uno de KnpLabs/snappy y hered\u00f3 la ruta de c\u00f3digo pre-parche exacta que KnpLabs parche\u00f3 en GHSA-vpr4-p6fq-85jc. PhpWeasyPrint versi\u00f3n 2.5.1 contiene un parche para el problema."}], "lastModified": "2026-10-25T23:10:00.167", "sourceIdentifier": "security-advisories@github.com"}