{"id":"CVE-2026-49286","summary":"PhpWeasyPrint vulnerable to PHAR deserialization via output filename (CVE-2023-28115 case-insensitive bypass)","details":"PhpWeasyPrint is a PHP library allowing PDF generation from a URL or an HTML page. Prior to version 2.6.0, `pontedilana/php-weasyprint` guarded the output filename against the `phar://` stream wrapper with a case-sensitive blacklist. PHP stream wrappers are case-insensitive, so `PHAR://`, `Phar://`, etc. bypass the check and reach `fileExists()` (`file_exists()`) in `prepareOutput()`. On PHP 7 (which the library still supports — PHP 7.4+), this triggers deserialization of a crafted PHAR archive's metadata, leading to remote code execution. This is the patch-bypass of CVE-2023-28115. The same issue and fix were handled upstream in KnpLabs/snappy (GHSA-92rv-4j2h-8mjj). PhpWeasyPrint version 2.6.0 contains a patch for the issue.","aliases":["GHSA-2fmj-p74r-3wjm"],"modified":"2026-07-15T01:49:02.716613707Z","published":"2026-06-19T17:03:58.118Z","related":["GHSA-2fmj-p74r-3wjm","GHSA-92rv-4j2h-8mjj"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49286.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-502"]},"references":[{"type":"WEB","url":"https://github.com/pontedilana/php-weasyprint/releases/tag/2.6.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49286.json"},{"type":"ADVISORY","url":"https://github.com/KnpLabs/snappy/security/advisories/GHSA-92rv-4j2h-8mjj"},{"type":"ADVISORY","url":"https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-2fmj-p74r-3wjm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49286"},{"type":"FIX","url":"https://github.com/pontedilana/php-weasyprint/commit/d1aa487722b5a3cab9b222b85fdb5608a5a550c3"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pontedilana/php-weasyprint","events":[{"introduced":"0"},{"fixed":"d1aa487722b5a3cab9b222b85fdb5608a5a550c3"},{"fixed":"41fab3fb87a41dcb6c6587ef36e2e87017deb8fb"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.6.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["2.5.1","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-2026-49286.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}